Chemistry Review

Which are TRUE about matter?

(Pick ALL answers that apply)

• Matter has mass

• Matter has weight

• Matter takes up space

• Matter is made of particles

Which of these things are matter?

(Pick ALL that apply)

• Air

• Heat

• Water

• Sound

Which state of matter takes the shape its container?

• Solid

• Liquid

• Gas

• Plasma

What state of matter spreads out as much as possible?

• Grey Matter

• Solid

• Liquid

• Gas

In which state of matter do the particles move back and forth (vibrate)?

• Solid

• Liquid

• Gas

• Quarks

What is TRUE about a closed system?

(Pick ALL answers that apply)

• Gas cannot escape

• Matter can go in and out

• Matter cannot go in and out

• The mass stays the same

What is TRUE about an open system?

(Pick ALL answers that apply)

• Gas can escape

• Matter can go in and out

• The mass cannot change

• The mass can change

What are signs of a chemical reaction?

(Pick ALL answers that apply)

• The formation of a precipitate

• Emitting light

• Dissolving into small pieces

• A change in temperature

How do you know this is a chemical reaction?

• It is actually a physical reaction

• It is made with chemicals

• It gives off light and gets hot

• It forms a precipitate

What kind of change is adding salt to water?

• A physical change

• A chemical change

• A thermodynamic change

• An irreversible change