Q: Some isotopes are stable indefinitely, while others are radioactive and do what through a characteristic form of emission? Choices: - replicate - bond - expand - decay A:
decay

Q: What property is defined as the magnitude or size of displacement between two positions? Choices: - gravity - Distance - passing - distance A:
distance

Q: Q: Glucocorticoids and mineralocorticoids are the two main types of what in humans? Choices: - carotenoids - metabolites - hormones - corticosteroids A:
A: corticosteroids

Question: Q: All matter in the universe is composed of one or more unique pure substances called what? Choices: - atoms - molecules - compounds - elements A:
Answer: elements

*Question*
Q: Molar mass is equal to density multiplied by what? Choices: - molar energy - molar weight - molar gravity - molar volume A:
**Answer**
molar volume

*Question*
Q: When additional water is added to an aqueous solution, what happens to the concentration of that solution? Choices: - doubles - no change - increases - decreases A:
**Answer**
decreases