A group of students weighed a jar of cream. Then they shook a jar of cream to make butter. Then, they weighed the jar again. Which best describes the mass/weight of the jar?

• The jar will have kept the same weight because it did not gain or lose any matter.

• The jar will have gained weight because some liquid changed to a solid.

• The jar will have gained weight because shaking added energy to it.

• The jar will have lost weight because of friction from shaking the liquid

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

Why is melting ice is a physical change instead of a chemical change?

• It does not smell bad.

• It does not form a new substance

• It changes from a solid to a liquid.

• It changes quietly with no loud sound.

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-4

ulia is following a recipe to make batter for a cake. She uses a scale to weigh each ingredient separately. How can she predict the mass of the batter?

• She can multiply the weights of each ingredient together

• She can divide the weight of the wet ingredients from the weight of the dry ingredients

• She can subtract the weight of the wet ingredients from the weight of the dry ingredients.

• She can add the weights of each ingredient together

Why is burning wood a chemical change?

• The process occurs quickly.

• The process creates a new substance.

• The process can be reversed.

• The process can be repeated.

Tags

NGSS.MS-PS1-2

Acid in the stomach digesting food is...

• an example of a new substance being formed

• NOT an example of a new substance being formed

• a way to increase mass in matter

• a way to decrease mass in matter

Tags

NGSS.MS-LS1-7

NGSS.MS-PS1-2

Scissors cutting paper into pieces is...

• an example of a new substance being made

• a way to add mass to matter

• NOT an example of a new substance being made

• a way to change the state of matter of paper

Sunshine warming a sidewalk is...

• an example of a new substance being made

• going to make the sidewalk contract

• going to increase the mass of the sidewalk

• NOT an example of a new substance being made

Tags

NGSS.MS-PS3-4

Sugar dissolving in coffee or tea is...

• an example of a new substance being formed

• NOT an example of a new substance being formed

• an example of evaporation

• an example of how mass decreases

Tags

NGSS.MS-PS1-2

Amani measured the mass of an empty beaker. The mass of the beaker was 110 grams (g). She added 60 grams of water to the beaker, then put the beaker in the freezer. The mass will be...

• 150 grams

• 170 grams

• 110 grams

• 60 grams

Sean is observing an experiment. He says, "A gas forms after the liquids are mixed!" His observation...

• doesn't show that a new substance is forming

• shows condensation forming

• is an example of a change in mass

• tells you a new substance is probably forming

Tags

NGSS.MS-PS1-2