Structure and Properties of Matter

Was mass conserved in this experiment? Use evidence from the graph.

• Yes, mass was conserved. I know that matter cannot be created or destroyed.

• Yes, mass was conserved. The ice still weighed 100 g after it melted.

• No, mass was not conserved. The ice was not still a solid after it melted.

• No, mass was not conserved. The liquid weighed 100 g.

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

This is a model of the particles in a ________.

• solid

• liquid

• gas

Tags

NGSS.MS-PS1-4

This is a model of the particles in a __________.

• solid

• liquid

• gas

Tags

NGSS.MS-PS1-4

This is a model of the particles in a ____________.

• solid

• liquid

• gas

Tags

NGSS.MS-PS1-1

Which process changes a gas to a liquid?

• freezing

• evaporation

• melting

• condensation

Tags

NGSS.MS-PS1-4

A combination of two or more different substances in which the substances keep their identities. 

• reaction

• mixture

• solution

• atom

Which one of these is NOT a solution?

• oil and water

• salt and water

• Sugar and water

Calculate the volume of a brick that is 4 cm long,7 cm high, and 3 cm high.

• 14 cubic centimeters

• 84 centimeters

• 28 cubic centimeters

• 84 cubic centimeters

A chef melts a 500-gram block of solid cheese in pot with a lid. How much should the cheese weigh after it is melted?

• The melted cheese should weigh 500 grams, because the cheese does not gain or lose mass when it melts.

• The melted cheese should weigh 480 grams, because some of the cheese evaporates as it melts.

• The melted cheese should weigh 520 grams, because the cheese absorbs oxygen as it melts.

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

What is the volume of the rock in the picture?

• 30 mL

• 40 mL

• 40 cm³

• 10 cm³