Unit 1 Matter

How long should the eyewash be used?

• 5 minutes

• 10 minutes

• 15 minutes

• 20 minutes

How long should the safety shower be used?

• 5 minutes

• 10 minutes

• 15 minutes

• 20 minutes

Safety shower, fire blanket, and fire extinguisher can all be used in which situation?

• A student's clothes are on fire

• A student drank chemicals

• A student was cut by glass

• A student tripped and spilled acid on the floor

Volume is an...

• intensive property

• extensive property

An intensive property...

• Depends on the amount of matter

• Does NOT depend on the amount of matter

An extensive property...

• Depends on the amount of matter present

• Does NOT depend on the amount of matter present

Color is an...

• intensive property

• extensive property

The substance CH3COOH is...

• an element

• a compound

• a homogeneous mixture

• a heterogeneous mixture

Which of the following does not have definite (fixed) volume?

• solid

• liquid

• gas

When something is a gas, its molecules...

• Are packed together very tightly

• Are spread far apart