Q: The force of attraction or repulsion between charged particles is called what? Choices: - magnetic force - cooling force - power force - electric force A:
electric force

Q: The three classes of elements are metals, nonmetals, and what? Choices: - ionic compounds - molecules - atoms - metalloids A:
metalloids

Q: Q: Where does most of the sound we hear travel through? Choices: - water - light - the ground - air A:
A: air

Question: Q: What traits do the sponge and tarantula share? Choices: - number of eyes - number of legs - lifespan - lack of backbone A:
Answer: lack of backbone

*Question*
Q: What is produced when hydrogen gas and oxygen gas are ignited? Choices: - liquid - Fire - air - water A:
**Answer**
water

*Question*
Q: Mass can be destroyed to release what? Choices: - acceleration - mass - velocity - energy A:
**Answer**
energy