Q: When the volume of a gas is decreased, what happens to its pressure? Choices: - drops - LOWERS - STAYS THE SAME - increases A:
increases

Q: Some compounds containing hydrogen are members of an important class of substances known as what? Choices: - proteins - ions - bases - acids A:
acids

Q: The fuel that burns in a combustion reaction in many fossil fuels such as natural gas that consists of carbon hydrogen is known as what? Choices: - helium - catalyst - fossil - hydrocarbon A:
hydrocarbon