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What biological agents that infect living hosts contain dna, yet lack the other parts shared by all cells, including a plasma membrane, cytoplasm, and ribosomes? | viruses. Viruses contain DNA but not much else. They lack the other parts shared by all cells, including a plasma membrane, cytoplasm, and ribosomes. Therefore, viruses are not cells, but are they alive? All living things not only have cells; they are also capable of reproduction. Viruses cannot reproduce by themselves... |
The length of the sloped surface of a ramp is referred to as what? | input distance. Consider the simple ramp in Figure below . A ramp can be used to raise an object up off the ground. The input distance is the length of the sloped surface of the ramp. The output distance is the height of the ramp, or the vertical distance the object is raised. Therefore, the ideal mechanical advantage ... |
What are two of the most common vision problems? | nearsightedness and farsightedness. Many people have vision problems. Often, the problem is due to the shape of the eyes and how they focus light. Two of the most common vision problems are nearsightedness and farsightedness. |
Foliation, which forms layers in rocks during metamorphism, is caused by what? | pressure. During metamorphism a rock may change chemically. Ions move and new minerals form. The new minerals are more stable in the new environment. Extreme pressure may lead to physical changes like foliation . Foliation forms as the rocks are squeezed. If pressure is exerted from one direction, the rock forms layers... |
The geometry of the bf 3 molecule is called what? | trigonal planar. The geometry of the BF 3 molecule is called trigonal planar . The fluorine atoms are positioned at the vertices of an equilateral triangle. The F-B-F angle is 120°, and all four atoms lie in the same plane. |
What do fission reactors use to slow down the neutrons? | moderator. U-235 nuclei can capture neutrons and disintegrate more efficiently if the neutrons are moving slower than the speed at which they are released. Fission reactors use a moderator surrounding the fuel rods to slow down the neutrons. Water is not only a good coolant but also a good moderator, so a common type o... |
What kind of cells have positive cell potentials, and all the reduction reactions are reversible? | galvanic cells. Galvanic cells have positive cell potentials, and all the reduction reactions are reversible. The reaction at the anode will be the half-reaction with the smaller or more negative standard reduction potential. Reversing the reaction at the anode (to show the oxidation) but not its standard reduction pot... |
What phenomenon is primarily the result of plate tectonic motions? | earthquake. Earthquakes are primarily the result of plate tectonic motions. What type of stress would cause earthquakes at each of the three types of plate boundaries?. |
What two things are used in optical instruments to reflect or refract light? | mirrors and lenses. Mirrors and lenses are used in optical instruments to reflect or refract light. Optical instruments include microscopes, telescopes, cameras, and lasers. |
When an atom gains or loses an electron it becames an? | ion. Sometimes atoms lose or gain electrons. Then they become ions . Ions have a positive or negative charge. That’s because they do not have the same number of electrons as protons. If atoms lose electrons, they become positive ions, or cations. If atoms gain electrons, they become negative ions, or anions. |
Where in the lungs does gas exchange between the air and blood takes place? | alveoli. The alveoli in the lungs are where gas exchange between the air and blood takes place. Each alveolus is surrounded by a network of capillaries. When you inhale, air in the alveoli has a greater concentration of oxygen than does blood in the capillaries. The difference in oxygen concentration causes oxygen to d... |
What are broad explanations that are widely accepted as true? | scientific theories. Scientific theories are broad explanations that are widely accepted as true. This is because they are supported by a great deal of evidence. |
What in roundworms is a partial body cavity filled with fluid? | pseudocoelom. Ancestors of roundworms also evolved a pseudocoelom. This is a partial body cavity that is filled with fluid. It allows room for internal organs to develop. The fluid also cushions the internal organs. The pressure of the fluid within the cavity provides stiffness. It gives the body internal support, form... |
What do you call a circuit that consists of one loop, which if interrupted at any point, causes cessation of the whole circuit's electric current? | series circuit. A circuit that consists of one loop is called a series circuit . You can see a simple series circuit below. If a series circuit is interrupted at any point in its single loop, no current can flow through the circuit and no devices in the circuit will work. In the series circuit below, if one light bulb ... |
Mercury is small, rocky and covered with what objects? | craters. 6. Mercury is small, rocky and covered with craters. Why?. |
Prokaryotes divide via binary fission and do not undergo what process of cell division? | mitosis. Reproduction Reproduction in prokaryotes is asexual and usually takes place by binary fission. Recall that the DNA of a prokaryote exists as a single, circular chromosome. Prokaryotes do not undergo mitosis. Rather the chromosome is replicated and the two resulting copies separate from one another, due to the ... |
The chemical symbol of which ion is written first in ionic compounds? | positive metal ion. Ionic compounds are compounds in which positive metal ions and negative nonmetal ions are joined by ionic bonds. In these compounds, the chemical symbol for the positive metal ion is written first, followed by the symbol for the negative nonmetal ion. The video at the following URL gives a fuller ex... |
What are the two types of vascular plants? | seedless and seed. Vascular plants are further divided into seedless and seed plants. |
Strength, the ability of a muscle to use force during a contraction, differs from what term meaning the ability of a muscle to continue to contract over time without getting tired? | endurance. Exercise improves both muscular strength and muscular endurance. Muscular strength is the ability of a muscle to use force during a contraction. Muscular endurance is the ability of a muscle to continue to contract over a long time without getting tired. |
When is the rate of the forward reaction equal to the rate of the reverse reaction? | at equilibrium. At equilibrium, the rate of the forward reaction is equal to the rate of the reverse reaction. |
In what organ does pepsin help break down proteins? | stomach. Acids and bases are important in living things because most enzymes can do their job only at a certain level of acidity. Cells secrete acids and bases to maintain the proper pH for enzymes to work. For example, every time you digest food, acids and bases are at work in your digestive system. Consider the enzym... |
Which gland is controlled by a negative feedback loop that includes the hypothalamus and pituitary gland? | thyroid. The thyroid gland is controlled by a negative feedback loop that includes the hypothalamus and pituitary gland. |
While most mammals give birth to live young, monotremes can do what? | lay eggs. Monotremes can lay eggs, but most mammals give birth to live young. |
The long mouth-tube that some insects use to suck up the nectar of the flower is called what? | proboscis. Some insects use siphoning, as if sucking through a straw, like moths and butterflies. This long mouth-tube that they use to suck up the nectar of the flower is called a proboscis . Some moths, however, have no mouthparts at all. Some insects obtain food by sponging , like the housefly. Sponging means that t... |
What do the planets orbit around in the solar system? | the sun. In the solar system, the planets orbit around the Sun. The Sun and each of the planets of our solar system are round. Earth is the third planet from the Sun. It is one of the inner planets. Jupiter is an outer planet. It is the largest planet in the solar system at about 1,000 times the size of Earth. The Sun ... |
What is an insect's hard outer exoskeleton made out of? | chitin. Figure 3.11 Insects have a hard outer exoskeleton made of chitin, a type of polysaccharide. (credit: Louise Docker). |
When volume does not change, temperature is proportional to what other property? | pressure. Pressure and temperature at constant volume are directly proportional. |
What is a sugar that is found in fruits? | fructose. In the Figure below , you can see structural formulas for glucose and two other sugars, named fructose and sucrose. Fructose is a sugar that is found in fruits. It is an isomer of glucose. Isomers are compounds that have the same atoms but different arrangements of atoms. Do you see how the atoms are arranged... |
What do stored fats provide our body with for later use? | energy. Fats are one type of lipid. Stored fat gives your body energy to use for later. It’s like having money in a savings account: it’s there in case you need it. Stored fat also cushions and protects internal organs. In addition, it insulates the body. It helps keep you warm in cold weather. |
A hydrostatic skeleton is a skeleton formed by a fluid-filled compartment within the body, called what? | coelom. Hydrostatic Skeleton A hydrostatic skeleton is a skeleton formed by a fluid-filled compartment within the body, called the coelom. The organs of the coelom are supported by the aqueous fluid, which also resists external compression. This compartment is under hydrostatic pressure because of the fluid and support... |
The average global temperature has been rising since the end of what era? | pleistocene. The average global temperature has been rising since the end of the Pleistocene. With some ups and downs, of course. Rising temperatures are natural for this time period. But natural causes cannot explain all the warming that's been happening. There is some other factor at work. |
What kind of energy conversion is done by a fuel cell? | chemical into electrical. Fuel Cells A fuel cell is a device that converts chemical energy into electrical energy. Fuel cells are similar to batteries but require a continuous source of fuel, often hydrogen. They will continue to produce electricity as long as fuel is available. Hydrogen fuel cells have been used to su... |
What element once commonly used in paint and gasoline has now been found to have dangerous effects? | lead. lead: An element that was once commonly used in gasoline and paint, is now found to have dangerous effects, such as brain damage. Lead contamination has many harmful effects on the body. |
As the organism grows more sophisticated, what happens to the process of gene regulation? | becomes more complex. As the organism grows more sophisticated, gene regulation becomes more complex, though prokaryotic organisms possess some highly regulated systems. Some human genes are controlled by many activators and repressors working together. Obviously, a mutation in a cis-regulatory region, such as the prom... |
What do you call the first cell of a new organism? | zygote. Cells divide repeatedly to produce an embryo. Previously the one-celled zygote (the first cell of a new organism) divided to make two cells (a). Each of the two cells divides to yield four cells (b), then the four cells divide to make eight cells (c), and so on. Through cell division, an entire embryo forms fro... |
Nearly all protists exist in some type of aquatic environment, including freshwater and marine environments, damp soil, and even snow. several protist species are parasites that infect animals or plants. a few protist species live on dead organisms or their wastes, and contribute to what? | their decay. Habitats Nearly all protists exist in some type of aquatic environment, including freshwater and marine environments, damp soil, and even snow. Several protist species are parasites that infect animals or plants. A few protist species live on dead organisms or their wastes, and contribute to their decay. |
What refers to a substance made from two or more elements joined by chemical bonds? | compound. In nature, elements rarely occur alone. Instead, they combine to form compounds. A compound is a substance composed of two or more elements joined by chemical bonds. For example, the compound glucose is an important body fuel. It is always composed of the same three elements: carbon, hydrogen, and oxygen. Mor... |
What instrument made it possible to study pressure quantitatively? | barometer. The thermometer was developed a short time after the barometer made it possible to study pressure in a quantitative manner. Although crude thermometers had been available for quite some time, Daniel Fahrenheit constructed a more accurate thermometer in 1724 using mercury in glass. Because the height of the m... |
In addition to glucose, what gas is used during cellular respiration? | oxygen. Cellular respiration uses oxygen in addition to glucose. It releases carbon dioxide and water as waste products. Cellular respiration actually "burns" glucose for energy. However, it doesn't produce light or intense heat like burning a candle or log. Instead, it releases the energy slowly, in many small steps. ... |
What is an adaptation? | favorable trait. Adaptations are favorable traits that organisms inherit. Adaptations develop from variations within a population and help organisms to survive in their given environment. |
Why does water infiltrate the ground? | because soil and rocks are porous. Water infiltrates the ground because soil and rock are porous. Between the grains are pores, or tiny holes. Since water can move through this rock it is permeable. Eventually, the water reaches a layer of rock that is not porous and so is impermeable. Water stops moving downward when ... |
Also called lodestone, the mineral magnetite is the most powerful what? | natural permanent magnet. Some materials are natural permanent magnets. The most magnetic material in nature is the mineral magnetite, also called lodestone (see Figure below ). The magnetic domains of magnetite naturally align with Earth’s axis. The picture on the left shows a chunk of magnetite attracting small bits ... |
Deficiency of what mineral causes bones to become porous and weak? | calcium. disease in which the bones become porous and weak because they do not contain enough calcium. |
What science is the study of matter and the changes it undergoes? | chemistry. Chemistry is the study of matter and the changes it undergoes. |
What term is not the same as energy, but means the energy per unit charge? | voltage. The second equation is equivalent to the first. Voltage is not the same as energy. Voltage is the energy per unit charge. Thus a motorcycle battery and a car battery can both have the same voltage (more precisely, the same potential difference between battery terminals), yet one stores much more energy than th... |
There is a positive correlation between the ability to conduct thermal energy and what other energy, as exemplified by metals? | electricity. Your feet feel cold as you walk barefoot across the living room carpet in your cold house and then step onto the kitchen tile floor. This result is intriguing, since the carpet and tile floor are both at the same temperature. The different sensation you feel is explained by the different rates of heat tran... |
What was diorite commonly used for in ancient civilizations? | art. An example of a physical model is a drawing of the layers of Earth ( Figure below ). A drawing helps us to understand the structure of the planet. Yet there are many differences between a drawing and the real thing. The size of a model is much smaller, for example. A drawing also doesn’t give good idea of how subs... |
Where are most plants firmly rooted? | soil. Like all living things, plants detect and respond to stimuli in their environment. Unlike animals, plants can't run, fly, or swim toward food or away from danger. They are usually rooted firmly in the soil, like the tree in Figure below . |
What type of change is undergone when the physical properties of a substance are changed? | physical. Any time the physical properties of a substance are changed, we can say the substance has undergone a physical change . All substances undergo physical changes where there is a change in the form of the substance but not in its chemical composition. For instance, the grinding of granular sugar into powdered s... |
What is the name of the iron-containing oxygen-transport protein in the red blood cells of all vertebrates? | hemoglobin. Hemoglobin is the iron-containing oxygen-transport protein in the red blood cells of all vertebrates. The hemoglobin molecule is an assembly of four globular protein subunits, each tightly associated with a non-protein heme group. The heme group binds to the iron ion. The most common hemoglobin is hemoglobi... |
What are used to make maps of the moon and other planets? | imaging satellites. Astronomers use imaging satellites to study and make maps of the Moon and other planets. |
What are the subatomic particles of the nucleus called? | nucleons. Summary Subatomic particles of the nucleus (protons and neutrons) are called nucleons. Anuclide is an atom with a particular number of protons and neutrons. An unstable nucleus that decays spontaneously is radioactive, and its emissions are collectively called radioactivity. Isotopes that emit radiation are S... |
Since warmer molecules have more energy, they are more what? | active. The density of air varies from place to place. Air density depends on several factors. One is temperature. Like other materials, warm air is less dense than cool air. Since warmer molecules have more energy, they are more active. The molecules bounce off each other and spread apart. Another factor that affects ... |
What is the name of the procedure where an unknown compound can be analyzed in the laboratory in order to determine the percentages of each element contained within it? | elemental analysis. In a procedure called elemental analysis , an unknown compound can be analyzed in the laboratory in order to determine the percentages of each element contained within it. These percentages can be transformed into the mole ratio of the elements, which leads to the empirical formula. The steps to be ... |
What is the property that determines the amount of current flow through a particular material? | resistance. Resistance is the property that determines the amount of current flow through a particular material. |
How do fungus-like protists such as slime molds reproduce? | with spores. Fungus-like protists are molds. They are absorptive feeders, found on decaying organic matter. They resemble fungi and reproduce with spores as fungi do. Examples of fungus-like protists include slime molds and water molds. |
What is the outer layer of the exoskeleton called? | cuticle. Segmented bodies with an exoskeleton . The outer layer of the exoskeleton is called the cuticle . It is made up of two layers. The outer layer, or exocuticle , is thin, waxy, and water-resistant. The inner layer is much thicker. The exocuticle is extremely thin in many soft-bodied insects, such as caterpillars... |
Which membranous organelles in a cell sequence enzyme and electron molecules for efficient cellular respiration? | mitochondria. Mitochondria, shown here as the green ovals in this animal cell, are membranous organelles which sequence enzyme and electron carrier molecules to make cellular respiration highly efficient. Mitochondria have both an inner and outer membrane, with a matrix inside the inner membrane. The inner membrane has... |
Mutualism is a symbiotic relationship that has what effect on both species involved? | beneficial. Mutualism is a symbiotic relationship in which both species benefit. |
What are the two components of the ecf? | plasma and if. Composition of Body Fluids The compositions of the two components of the ECF—plasma and IF—are more similar to each other than either is to the ICF (Figure 26.5). Blood plasma has high concentrations of sodium, chloride, bicarbonate, and protein. The IF has high concentrations of sodium, chloride, and bi... |
When light transfers its energy to objects, this is known as what? | absorption. Light may transfer its energy to matter rather than being reflected or transmitted by matter. This is called absorption . When light is absorbed, the added energy increases the temperature of matter. If you get into a car that has been sitting in the sun all day, the seats and other parts of the car’s inter... |
What process allows particles too large to move along the stream bed? | saltation. Particles that are too large to be suspended move along the stream bed by saltation. |
What is a therian mammal in which the embryo is born at an early, immature stage? | a marsupial. Marsupials have a different way of reproducing that reduces the mother’s risks. A marsupial is a therian mammal in which the embryo is born at an early, immature stage. The embryo completes its development outside the mother’s body in a pouch on her belly. Only a minority of therian mammals are marsupials.... |
What do we call the visible part of the electromagnetic spectrum? | light. Earth is just a tiny speck in the universe. Our planet is surrounded by lots of space. Light travels across empty space. Astronomers can study light from stars to learn about the universe. Light is the visible part of the electromagnetic spectrum . Astronomers use the light that comes to us to gather information... |
What do you call the ability of a particular electrochemical cell to generate an electric current? | electrical potential. The ability of a particular electrochemical cell to generate an electric current is called its electrical potential. Reduction potentials measure the tendency of a substance to be reduced in a redox reaction. |
What are the winds that occur in belts that encircle the planet? | global winds. Before catalytic converters were required, cars spewed a lot of pollutants into the air. On the left is a car without a catalytic converter. The car on the right has one. |
If water from a spring can't flow downwards, it can spread out to form one of 2 things. what are they? | pond or lake. Water flowing out of the ground at a spring may flow downhill and enter a stream. That’s what happens to the water that flows out of Big Spring in Missouri. If the water from a spring can’t flow downhill, it may spread out to form a pond or lake instead. Lake George in New York State, which is pictured in... |
When the bud is fully developed, it breaks away from the parent cell and forms a new what? | organism. Budding occurs when a parent cell forms a bubble-like bud. The bud stays attached to the parent cell while it grows and develops. When the bud is fully developed, it breaks away from the parent cell and forms a new organism. Budding in yeast is shown in Figure below . |
The force on a charged particle in a magnetic field is always perpendicular to both its velocity vector and the? | field vector. Since the force on a charged particle in a magnetic field is always perpendicular to both its velocity vector and the field vector (check this using the second right hand rule above), a constant magnetic field will provide a centripetal force --- that is, a constant force that is always directed perpendic... |
What process determines which of two fossils is older or younger than the other? | relative dating. Relative dating determines which of two fossils is older or younger than the other, but not their age in years. Relative dating is based on the positions of fossils in rock layers. Lower layers were laid down earlier, so they are assumed to contain older fossils. This is illustrated in Figure below . |
What causes the menstrual cycle to be repeated? | lack of fertilization. The menstrual cycle is a series of changes in the reproductive system of mature females that repeats every month on average. It includes changes in the uterus as well as development of an egg and ovulation. If fertilization does not occur, menstruation occurs and the cycle repeats. |
What does the term porifera means? | pore-bearing. Sponges are aquatic invertebrates that make up the phylum Porifera. The word porifera means pore-bearing. The phylum is aptly named. As you can see from Figure below , a sponge has a porous body. There are at least 5,000 living species of sponges. Almost all of them inhabit the ocean, living mainly on cor... |
What is the only known planet with large amounts of water? | earth. Earth is the third planet from the Sun. It is the only planet with large amounts of liquid water, and the only planet known to support life. Earth is the only inner planet that has a large round moon. |
What do molecules need to do for a reaction to take place? | collide. Molecules need to collide in order for a reaction to take place. |
What is the main function of blood? | to transport. The main function of blood is transport. Blood in arteries carries oxygen and nutrients to all the body’s cells. Blood in veins carries carbon dioxide and other wastes away from cells to be excreted. Blood also transports the chemical messengers called hormones to cells throughout the body where they are ... |
What do you call the heat below earth’s surface that can be used to produce electricity? | geothermal energy. Heat below Earth’s surface—called geothermal energy— can be used to produce electricity. A power plant pumps water underground where it is heated. Then it pumps the water back to the plant and uses its thermal energy to generate electricity. On a small scale, geothermal energy can be used to heat hom... |
What term is defined as a way of writing very large or small numbers that uses exponents? | scientific notation. Quantities in science may be very large or very small. This usually requires many zeroes to the left or right of the decimal point. Such numbers can be hard to read and write accurately. That’s where scientific notation comes in. Scientific notation is a way of writing very large or small numbers t... |
What are small, icy objects that have very elliptical orbits around the sun? | comets. Comets are small, icy objects that have very elliptical orbits around the Sun. Their orbits carry them from the outer solar system to the inner solar system, close to the Sun. Early in Earth’s history, comets may have brought water and other substances to Earth during collisions. |
What is the process of small molecules passing through the plasma membrane called? | diffusion. Small molecules can pass through the plasma membrane through a process called diffusion. Diffusion is the movement of molecules from an area where there is a higher concentration (larger amount) of the substance to an area where there is a lower concentration (lower amount) of the substance ( Figure below ).... |
Name the 3 ocean zones. | intertidal, pelagic, benthic. Zones in the oceans include the intertidal, pelagic, and benthic zones. The types of organisms found in these ocean zones are also determined by such factors as depth of water and distance from shore, among other factors. |
What has a bigger impact on water quality, natural events or human activity? | human activity. Natural events, like storms, volcanic eruptions and earthquakes can cause major changes in water quality. But human-caused contaminants have a much greater impact on the quality of the water supply. Water is considered polluted either when it does not support a human use, like clean drinking water, or a... |
What is the apt term for the very slow movement of rock and soil down a hillside? | creep. Creep is the very slow movement of rock and soil down a hillside. Creep occurs so slowly you can’t see it happening. You can only see the effects of creep after years of movement ( Figure below ). The slowly moving ground causes trees, fence posts, and other structures on the surface to tilt downhill. |
Melting ice and grinding wood into sawdust are examples of what? | physical changes. Melting ice and grinding wood into sawdust are examples of physical changes. |
How many vertebrae make up the human vertebral column? | 33. Human Vertebral Column and Vertebrae. The human vertebral column consists of 33 vertebrae. Two vertebrae are shown here enlarged. |
The most basic division of land plants is between what type of plants? | nonvascular and vascular. The scientific classification of modern land plants is under constant revision. Informally, land plants can be classified into the groups listed in Table below . The most basic division is between nonvascular and vascular plants. Vascular plants are further divided into those that reproduce wi... |
What is the mass that is "lost" in fission or fusion actually converted to? | energy. When the nucleus of a radioisotope undergoes fission or fusion, it loses a tiny amount of mass. What happens to the lost mass? It isn’t really lost at all. It is converted to energy. How much energy? . The change in mass is tiny, but it results in a great deal of energy. |
In sexually reproducing organisms, parents pass a copy of each type of what to their offspring by producing gametes? | chromosome. In sexually reproducing organisms, parents pass a copy of each type of chromosome to their offspring by producing gametes. When gametes are fertilized and form offspring, each has a unique combination of chromosomes and genes from both parents. The inherited gene combination determines the characteristics o... |
What do light emitters do to what you see? | add frequencies. Discussions of colors can sometimes become confusing because of the difference between light emitters and light absorbers. Light absorbers, such as dyes and pigments, absorb frequencies from those that you see, while light emitters add frequencies to what you see. If I were to shine red light, green li... |
What type of current do generators in cars use? | alternating current. Generators may be set up to produce either alternating or direct current. Generators in cars and most power plants produce alternating current. |
The majoirty of modern gymnosperms belong to what group, which includes pine trees? | conifers. There are only about 1,000 living species of gymnosperms, whereas there are hundreds of thousands of living species of angiosperms. Living gymnosperms are typically classified in the divisions described in the Table below . Most modern gymnosperms are trees with woody trunks. The majority are conifers such as... |
What once most common bird in north america became extinct in the 1800s? | the passenger piegon. Hundreds of species of birds have gone extinct as a result of human actions. A well-known example is the passenger pigeon. It was once the most common bird in North America, but overhunting and habitat destruction led to its extinction in the 1800s. Habitat destruction and use of the pesticide DDT... |
A source of what is needed to disturb matter and start a mechanical wave? | energy. The waves in the picture above are examples of mechanical waves. A mechanical wave is a disturbance in matter that transfers energy through the matter. A mechanical wave starts when matter is disturbed. A source of energy is needed to disturb matter and start a mechanical wave. |
The environment where most chemical reactions in organisms takes place consists mostly of what? | water. Most chemical reactions in organisms take place in an environment that is mostly water. |
Titration is a method to determine what in acids or bases? | concentration. The concentration of an acid or base can be determined by titration. |
Three-prong plugs, circuit breakers, and gfci outlets are safety features that recognize the danger of what? | electricity. Because electricity can be so dangerous, safety features are built into modern electric circuits and devices. They include three-prong plugs, circuit breakers, and GFCI outlets. You can read about these three safety features in the Figure below . You can learn more about electric safety features in the hom... |
Mass and volume are examples of what kind of properties? | extensive properties. Mass and volume are examples of extensive properties. |
What can refer to a rope in a particular shape and a genetic structure involved in splicing? | lariat. A lariat can refer to a rope in the form of a lasso. But it is also a genetic structure involved in splicing. |
Mountain ranges, plateaus, and plains are features of what large landforms? | continents. Features of continents include mountain ranges, plateaus, and plains. |
Do metals tend to gain electrons or lose electrons in chemical reactions? | lose electrons. Metallic character refers to the level of reactivity of a metal. Metals tend to lose electrons in chemical reactions, as indicated by their low ionization energies. Within a compound, metal atoms have relatively low attraction for electrons, as indicated by their low electronegativities. By following th... |
What does the term decay in chemistry refer to with regards to atoms? | changes in nuclei. You probably associate the term decay with images like the one above. But when it comes to atoms, decay has a different meaning. Decay in chemistry refers to changes in the nuclei of certain atoms. |
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