Problem: OPTIONS:
- fluids
- currents
- points
- waves
Q: Q: Electromagnetic radiation behaves like particles as well as what? A:
Answer: waves

Problem:OPTIONS:
- different linear structures
- different molecular structures
- different rods structures
- different crystal structures

Q: Why are two different minerals considered different though they have the same chemical composition? A:
****
A: different crystal structures

Q: The sun emits energy in the form of what? A:
OPTIONS:
- mechanical radiation
- particles radiation
- microwave radiation
- electromagnetic radiation
electromagnetic radiation

Q: Hydrocarbons are made up of carbon and what else? A:
OPTIONS:
- silicon
- nitrogen
- helium
- hydrogen

Answer: hydrogen

Question: Q: What are the attractive forces that occur between polar molecules called? A:
OPTIONS:
- induced-dipole forces
- particle - dipole forces
- ion-dipole forces
- dipole-dipole forces
Answer: dipole-dipole forces

input: OPTIONS:
- month
- scientist
- discoverer
- element Now, answer this question: Q: Chemical symbols are useful to concisely represent the elements present in a substance. the letters usually come from the name of what? A:
A:
output:
element