*Question*
Q: What is an odorless white solid that is harmless unless consumed in large quantities? Choices: - Hydrogen - carbon chloride - oxygen chloride - sodium chloride A:
**Answer**
sodium chloride

*Question*
Q: What consists of one or two closed loops through which current can flow? Choices: - thermal reaction - magnetic poles - cooling circuit - electric circuit A:
**Answer**
electric circuit

*Question*
Q: What does a hydrolase use to split molecules? Choices: - air - gas - momentum - water A:
**Answer**
water

*Question*
Q: What are metals and good electrical conductors that tend to lose their valence electrons in chemical reactions called? Choices: - stable metals - conservants - precious metals - reductants A:
**Answer**
reductants