Q: 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: Q: An object's energy due to motion is known as? A:

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

A: kinetic energy

Q: 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: 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