Answer the following question given this paragraph: Gamma rays are produced during gamma decay of an excited nucleus. During gamma decay, the nucleus emits a "packet" of energy called a gamma particle. Q: What is the"packet" of energy called that the nucleus emits during gamma decay? Choices: - transient particle - radioactive particle - ultraviolet particle - gamma particle A:
gamma particle
Answer the following question given this paragraph: A: All chemical equations must be balanced. This means that there must be the same number of each type of atom on both sides of the arrow. That's because mass is always conserved in chemical reactions. Count the number of hydrogen and oxygen atoms on each side of the arrow. There are two hydrogen atoms in both reactants and products. There are two oxygen atoms in the reactants but only one in the product. Therefore, equation 1 is not balanced. Q: What is always conserved in chemical reactions? Choices: - energy - bonds - force - mass A:
mass
Q: Answer the following question given this paragraph: Epidemiologist Epidemiology is the study of the occurrence, distribution, and determinants of health and disease in a population. It is, therefore, part of public health. An epidemiologist studies the frequency and distribution of diseases within human populations and environments. Epidemiologists collect data about a particular disease and track its spread to identify the original mode of transmission. They sometimes work in close collaboration with historians to try to understand the way a disease evolved geographically and over time, tracking the natural history of pathogens. They gather information from clinical records, patient interviews, surveillance, and any other available means. That information is used to develop strategies, such as vaccinations (Figure 22.26), and design public health policies to reduce the incidence of a disease or to prevent its spread. Epidemiologists also conduct rapid investigations in case of an outbreak to recommend immediate measures to control it. An epidemiologist has a bachelor's degree, plus a master's degree in public health (MPH). Many epidemiologists are also physicians (and have an M. ), or they have a Ph. in an associated field, such as biology or microbiology. Q: What is a person who studies the frequency and distribution of disease within human populations and environments called? Choices: - biologist - entymologist - anthropologist - epidemiologist A:
A: epidemiologist
Question: Answer the following question given this paragraph: Hydrogen chloride contains one atom of hydrogen and one atom of chlorine. Because the. Q: Hydrogen chloride contains one atom of hydrogen and one atom of what? Choices: - magnesium - calcium - nitrogen - chlorine A:
Answer: chlorine
*Question*
Answer the following question given this paragraph: From a human point of view, natural resources can be classified as either renewable or nonrenewable. Renewable resources, such as sunlight and living things, can be remade quickly by natural processes. Nonrenewable resources, such as fossil fuels and soil, cannot be remade or else take millions of years to remake. Q: These resources can be remade quickly, through natural processes Choices: - fossil fuel - non-renewable - electric - renewable A:
**Answer**
renewable
Answer the following question given this paragraph: is the phase (or state) of matter. The three fundamental phases of matter are solid, liquid, and gas (see Figure 1.1 "The Phases of Matter"). Chemical properties are characteristics of matter that describe how matter changes form in the presence of other matter. Does a sample of matter burn? Burning is a chemical property. Does it behave violently when put in water? This reaction is a chemical property as well (Figure 1.2 "Chemical Properties"). In the following chapters, we will see how descriptions of physical and chemical properties are important aspects of chemistry. If matter always stayed the same, chemistry would be rather boring. Fortunately, a major part of chemistry involves change. A physical change occurs when a sample of matter changes one or more of its physical properties. For example, a solid may melt (Figure 1.3 "Physical Changes"), or alcohol in a thermometer may change volume as the temperature changes. A physical change does not affect the chemical composition of matter. A chemical change is the process of demonstrating a chemical property, such as the burning match in Figure 1.2 "Chemical Properties". As the matter in the match burns, its chemical composition changes, and new forms of matter with new physical properties are created. Note that chemical changes are frequently accompanied by physical changes, as the new matter will likely have different physical properties from the original matter. Q: What are the three fundamental phases of matter? Choices: - fast, slow, normal - big, small. and medium - air, water, and land - solid, liquid, and gas A:
solid, liquid, and gas