Q: Answer the question

Using nonrenewable resources for energy produces waste products that can have long-term, negative effects on Earth's subsystems. Which energy source produces waste products that can have these effects for the longest amount of time?
OPTIONS:
- natural gas
- uranium
- crude oil
- coal

A: uranium

Q: Answer the question

Which substance should a student apply to the skin if he or she gets splashed with an acid?
OPTIONS:
- water
- vinegar
- salt
- formaldehyde

A: water

Q: Answer the question

A chemical property of a mineral is evident if the mineral
OPTIONS:
- breaks easily when struck with a hammer
- bubbles when acid is placed on it
- is easily scratched by a fingernail
- reflects light from its surface

A:
bubbles when acid is placed on it