*Question*
Q: What process does water undergo to leave behind dissolved substances? Choices: - accumulation - oxidation - ascension - evaporation A:
**Answer**
evaporation

*Question*
Q: What is a mixture of potassium nitrate, sulfur, and charcoal? Choices: - gasoline - cyanide - TNT - gunpowder A:
**Answer**
gunpowder

*Question*
Q: About how full is the outer energy level in metalloids? Choices: - nearly empty - three-fourth full - a quarter full - half full A:
**Answer**
half full

*Question*
Q: Particles of sand and what other substance are carried by longshore drift? Choices: - magma - bone - soil - rock A:
**Answer**
rock