Answer the following question given this paragraph: Note the Pattern Ionic compounds contain both cations and anions in a ratio that results in zero electrical charge. In covalent compounds, electrons are shared between bonded atoms and are simultaneously attracted to more than one nucleus. In contrast, ionic compounds contain cations and anions rather than discrete neutral molecules. Ionic compounds are held together by the attractive electrostatic interactions between cations and anions. In an ionic compound, the cations and anions are arranged in space to form an extended three-dimensional array that maximizes the number of attractive electrostatic interactions and minimizes the number of repulsive electrostatic interactions (Figure 2.5 "Covalent and Ionic Bonding"). As shown in Equation 2.1, the electrostatic energy of the interaction between two charged particles is proportional to the product of the charges on the particles and inversely proportional to the distance between them: Saylor URL: http://www. saylor. org/books. Q: Ionic compounds contain cations and anions rather than what? Choices: - characterized neutral molecules - positive molecules - analogous neutral molecules - discrete neutral molecules A:
discrete neutral molecules
(Question)
Answer the following question given this paragraph: An asteroid can only change due to a collision. A collision may cause the asteroid to break up. It may create craters on the asteroid's surface. An asteroid may strike a planet if it comes near enough to be pulled in by its gravity. Q: What is the only thing that can change an asteroid? Choices: - weather - a wind - a situation - a collision A:
(Answer)
a collision
Ques: Answer the following question given this paragraph: Some unstable acids decompose to produce nonmetal oxides and water. Carbonic acid decomposes easily at room temperature into carbon dioxide and water. Q: Carbonic acid decomposes easily at room temperature into carbon dioxide and what else? Choices: - gas - oxygen - helium - water A:
Ans: water
(Q).
Answer the following question given this paragraph: In addition to having a plasma membrane, cytoplasm, a nucleus and ribosomes, eukaryotic cells also contain membrane-bound organelles . Each organelle in a eukaryote has a distinct function. Because of their complex level of organization, eukaryotic cells can carry out many more functions than prokaryotic cells. The main differences between prokaryotic and eukaryotic cells are shown in Figure below and listed in Table below . Keep in mind that some eukaryotic cells may have characteristics or features that other eukaryotic cells lack, such as the cell wall. Q: Which type of cell can carry out more functions, eukaryotic cells or prokaryotic cells? Choices: - chromosomal cells - Prokaryotic Cells - both - eukaryotic cells A:
(A).
eukaryotic cells
Ques:Answer the following question given this paragraph: All three types of convergent plate boundaries produce massive earthquakes. Q: All three types of convergent plate boundaries produce what destructive phenomenon? Choices: - storm - tornado - volcano - earthquake A:

Ans:earthquake
Answer the following question given this paragraph: Fats may be either saturated or unsaturated. A saturated fat is a fat that consists of triglycerides whose carbon chains consist entirely of carbon-carbon single bonds. Therefore, the carbon chains are saturated with the maximum number of hydrogen atoms possible. An unsaturated fat is a fat that consists of triglycerides whose carbon chains contain one or more carbon-carbon double bonds . A fat with one double bond is called monounsaturated, while a fat with multiple double bonds is called polyunsaturated (see Figure below ). Q: What are the two types of fats? Choices: - thick and thin - full and empty - liquid and solid - saturated and unsaturated A:
saturated and unsaturated