Problem:OPTIONS:
- calcium
- helium
- ions
- hydrogen

Answer the following question given this paragraph: Some molecules are not able to satisfy the octet rule by making only single covalent bonds between the atoms. Consider the compound ethene, which has a molecular formula of C 2 H 4 . The carbon atoms are bonded together, with each carbon also being bonded to two hydrogen atoms. Q: The carbon atoms are bonded together, with each carbon also being bonded to two of what kind of atoms? A:
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A: hydrogen

Problem:OPTIONS:
- inorganic compounds
- amino acids
- hydrocarbons
- organic compounds

Answer the following question given this paragraph: In just the right combinations, you get life. Carbon, hydrogen, nitrogen, oxygen, phosphorus and sulfur. Some of the most basic of elements, but some of the most important. Together they can form countless combinations of organic compounds. And in just the right combinations, anything can happen. Q: Carbon, hydrogen, nitrogen, oxygen, phosphorus and sulfur are basic elements that form what type of compounds, which are vital to life? A:
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A: organic compounds

Problem:OPTIONS:
- distilled water
- dependent water
- inactive water
- excess water

Answer the following question given this paragraph: Excess water is absorbed from food waste in the large intestine before it passes out of the body through the anus as feces. Trillions of helpful bacteria also live in the large intestine. They carry out important roles, such as making vitamins. Q: What is absorbed from food waste in the large intestine before it passes out of the body as feces? A:
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A: excess water

Problem:OPTIONS:
- absolute
- high
- stable
- low

Answer the following question given this paragraph: Under what conditions then, do gases behave least ideally? When a gas is put under high pressure, its molecules are forced closer together as the empty space between the particles is diminished. A decrease in the empty space means that the assumption that the volume of the particles themselves is negligible is less valid. When a gas is cooled, the decrease in kinetic energy of the particles causes them to slow down. If the particles are moving at slower speeds, the attractive forces between them are more prominent. Another way to view it is that continued cooling the gas will eventually turn it into a liquid and a liquid is certainly not an ideal gas anymore (see liquid nitrogen in the Figure below ). In summary, a real gas deviates most from an ideal gas at low temperatures and high pressures. Gases are most ideal at high temperature and low pressure. Q: Gases are most ideal at high temperature and what pressure? A:
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A:
low