Law of Conservation of Mass, Science Weekly 5th grade

An ice cube weighs 20 grams. How much will it weigh after it melts?

• 10 grams

• 15 grams

• 20 grams

• 25 grams

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NGSS.MS-PS1-4

NGSS.MS-PS1-5

A substance disappears when it is dissolved.

• True

• False

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NGSS.MS-PS1-2

Marta creates a snack mixture. She puts in 15 grams of peanuts, 10 grams of walnuts, and 10 grams of almonds. How much does her mixture weigh?

• 20 grams

• 25 grams

• 35 grams

• 45 grams

Water is able to dissolve and transport many substances.

• True

• False

Tags

NGSS.MS-PS1-2

Dante dissolves three grams of sugar in 55 grams of water. How much does the mixture weigh?

• 50 grams

• 52 grams

• 55 grams

• 58 grams

Heat is added to a cube of iron until it melts. More heat is added until the iron becomes a gas. All of the gas is captured and cooled back into a cube of iron. How will the weight of the cube compare to the original cube?

• It will weigh less

• It will weigh more

• It will weigh the same

• They cannot be compared

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NGSS.MS-PS1-4

NGSS.MS-PS1-5

Which property defines matter?

• mass

• length

• temperature

• physical state

What is the Law of Conservation of Mass?

• States that mass is greater when heated than when cold.

• Mass is less than when it is cold and heated.

• States that mass is neither created nor destroyed in chemical reactions.

• States that mass is both greater and less than.

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

What is unique about water?

• It always remains pure.

• It can be in any phase

• It freezes when warmer

• Its solid form can float

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NGSS.MS-PS1-4

What does dissolve mean?

• become solid

• turn into a gas

• break down in a liquid

• make something warmer

Tags

NGSS.5-PS1-2

NGSS.5-PS1-4