Mass shows an objects________.

• chemical properties

• size

• length

• amount of matter

Which is a sign of a chemical change?

• giving off light or heat

• a change in volume

• a change in weight

• a change of state

Tags

NGSS.MS-PS1-2

Does mixing salt and water cause a chemical change?

• Yes, because the color changes

• Yes, because the water tastes different.

• No. The properties of the salt and water do not change.

• No. Water can't cause chemical change.

Tags

NGSS.MS-PS1-2

A melting ice cube is an example of what?

• a change of state from liquid to gas

• slowing down of the movement of particles

• lowering in termperature

• physical change

Tags

NGSS.MS-PS1-4

Which of the following is a physical change?

• frying eggs

• toasting bread

• burning wood

• cutting paper

When matter changes state, the total amount of matter stays the same. What is this called?

• conservation of state change

• conservation of evaporation

• conservation of matter

• conservation of heat

Tags

NGSS.MS-PS1-4

Which is NOT a sign of chemical change?

• bubbling

• heat

• light

• melting

Tags

NGSS.MS-PS1-2

What happens during a chemical change?

• The mass of a material changes.

• The material and its properties change.

• The material always changes state.

• The material always dissolves.

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

What is the process that makes a chemical change happen?

• evaporation

• change of state

• chemical reaction

• condensation

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

A white powder is mixed into water. The mixture heats up and turns into a solid, hard, white material. How does this show a chemical change has happened?

• The mixture only gave off heat.

• The mixture changed color.

• The volume of the mixture changed.

• The mixture gave off heat and had different properties than the original material.

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-4