Q: What is term for the smallest particle of an element that still has the properties of said element? Choices: - proton - nucleus - molecule - atom A:
atom

Q: What is the low level of radiation that occurs naturally in the environment called? Choices: - temperature radiation - neon radiation - consequence radiation - background radiation A:
background radiation

Q: Q: What is evolution that occurs over a long period of time called? Choices: - spontaneous mutation - introgression - catabolism - macroevolution A:
A: macroevolution

Question: Q: In what part of the carbon cycle does carbon move between living things and the air? Choices: - endothermic cycle - envelop cycle - abdaspac cycle - biotic cycle A:
Answer: biotic cycle

*Question*
Q: What is the amount of energy required to begin a chemical reaction known as? Choices: - decomposition energy - reaction energy - positive energy - activation energy A:
**Answer**
activation energy

*Question*
Q: What are the three types of isomers? Choices: - structural, Polypropylene , enatiomers - structural , chromosome - trans , enatiomers - structural, cis-trans, Polystyrene - structural, cis-trans, enatiomers A:
**Answer**
structural, cis-trans, enatiomers