Matter Changes

Which is a physical change involving an egg?

• frying an egg

• boiling an egg

• breaking an egg

Stanley left an ice cube on his kitchen counter. An hour later, Stanley observed that the ice cube melted. Which statement best describes this change?

• Ice melting is a physical change because a new substance is created.

• Ice melting is a chemical change because a new substance is created.

• Ice melting is a chemical change because it may be reversed.

• Ice melting is a physical change because it may be reversed.

Tags

NGSS.MS-PS1-4

Ruth left a wax candle in her car for several hours on a warm day. Which describes the change in the candle Ruth most likely observed?

• The candle changed its shape.

• The mass of the candle wax increased.

• The mass of the candle wax decreased.

• The candle changed into a new substance.

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

Which describes a chemical change?

• sugar dissolving in tea

• sunshine warming a sidewalk

• scissors cutting paper into pieces

• acid in the stomach digesting food

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

Which best explains why burning leaves is a chemical change?

• The leaves emit light during the change.

• The temperature of the leaves increases.

• The shape of the leaves changes.

• The leaves turn to ashes.

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

Kim put a bottle of juice into the freezer. A few hours later, Kim checked the bottle of juice and noticed there were pieces of ice in the juice. Which best describes what happened to her bottle of juice?

• The juice changed from liquid to gas in the freezer.

• The juice changed from solid to gas in the freezer.

• The juice had begun to change from liquid to solid in the freezer.

• The juice had begun to change from solid to liquid in the freezer.

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

Jennifer left her bike outside, buried in snow. In the spring, when the snow melted, she found her bike covered in rust. Which best describes the change to the bike?

• It was a chemical change, because the bike was a different color.

• It was a chemical change, because the rubber tires were deflated.

• It was a chemical change, because rust can be removed from the metal.

• It was a chemical change, because rust is a new substance on the metal.

Tags

NGSS.MS-PS1-2

Gloria’s family built a wood fire in the fireplace. The next day, Gloria noticed that there was no wood left in the fireplace, only ashes. Which best explains this?

• Wood is separated from ashes as it burns.

• Wood becomes a new substance as it burns.

• Ashes have the same properties as wood.

• Ashes are the same substance as wood.

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

Ramano is burning wood in a bonfire. What change is occurring during the fire?

• The wood is gaining more mass.

• The wood is changing into a liquid.

• The wood is dissolving into the ground.

• The wood is releasing a gas as smoke.

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-4

NGSS.MS-PS1-5

Which example best describes a physical change?

• baking a pie

• burning a candle

• making a paper airplane