Q: Answer the following question given this paragraph: Compounds that contain mainly the elements carbon and hydrogen are called organic compounds . This is because they are found mainly in living organisms. Most organic compounds are held together by covalent bonds. An example of an organic compound is glucose (C 6 H 12 O 6 ), which is shown in Figure below . Glucose is a simple sugar that living cells use for energy. All other compounds are called inorganic compounds. Water is an example of an inorganic compound. Q: Compounds that contain mainly the elements carbon and hydrogen are called what kind of compounds? A:

OPTIONS:
- microscopic compounds
- reactive compounds
- natural compounds
- organic compounds

A: organic compounds

Q: Answer the following question given this paragraph: An object's kinetic energy is the energy due to motion. Kinetic energy can be defined mathematically as. Q: An object's energy due to motion is known as? A:

OPTIONS:
- residual energy
- inertia
- thermodynamic energy
- kinetic energy

A: kinetic energy

Q: Answer the following question given this paragraph: The rates at which chemical reactions take place in organisms are very important. Chemical reactions in organisms are involved in processes ranging from the contraction of muscles to the digestion of food. For example, when you wave goodbye, it requires repeated contractions of muscles in your arm over a period of a couple of seconds. A huge number of reactions must take place in that time, so each reaction cannot take longer than a few milliseconds. If the reactions took much longer, you might not finish waving until sometime next year. Q: What kind of reactions are involved in processes ranging from the contraction of muscles to the digestion of food? A:

OPTIONS:
- liquid
- atomical
- mineral
- chemical

A: chemical

Q: Answer the following question given this paragraph: The atmosphere protects living things from the Sun's most harmful rays. Gases reflect or absorb the strongest rays of sunlight. Figure below models this role of the atmosphere. Q: What is the name of the protective layer of gases that surrounds the earth and blocks harmful rays from the sun? A:

OPTIONS:
- the corona
- the protector
- the coma
- the atmosphere

A:
the atmosphere