Q: How do we describe chemical reactions? A:
OPTIONS:
- balanced reactions
- equilibrium
- atomic numbers
- chemical equations

Answer: chemical equations

Q: Which process helps provide cleaner water for agriculture? A:
OPTIONS:
- purification
- sterilization
- osmosis
- process of desalinization

Answer: process of desalinization

Q: What will you see if you look at a star through a prism? A:
OPTIONS:
- kaleidoscope
- rainbow
- spots
- spectrum

Answer:
spectrum