Kevin observed water droplets forming on the outside of his milk carton after he took it out of the refrigerator. Which of the following caused the water droplets to form?

• evaporating

• freezing

• melting

• condensing

Tags

NGSS.MS-PS1-4

A class performed some investigations to compare physical and chemical changes. Some of the investigations involved creating new materials with different characteristics that could not be changed back to the original materials. Which of the following cause a change that can NOT be undone? Select all that apply.

• melting ice

• inflating a balloon

• leaving a banana to rot

• toasting bread

• lighting a candle

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

• solid to liquid

• liquid to solid

• liquid to gas

• gas to liquid

Tags

NGSS.MS-PS1-4

• liquid to gas

• gas to liquid

• liquid to solid

• solid to liquid

Tags

NGSS.MS-PS1-4

What happens to liquid water when enough heat is applied to make it boil?

• it changes state from liquid to solid

• it changes state from solid to liquid

• it changes state from liquid to gas

• it changes state from gas to liquid

Tags

NGSS.MS-PS1-4

After a rainstorm, Sarah observed many puddles on the sidewalks around the school. The puddles that were in the sun disappeared, but there were still some puddles left on the sidewalks in the shade. Which best explains why some of the puddles didn't disappear?

• the temperature was cooler in the shade

• the water turned into ice

• the temperature was warmer in the shade

• the water turned into water vapor

Tags

NGSS.MS-ESS2-4

What are some indicators that a chemical change has taken place? Select all that apply.

• the color of the material changes

• the texture of the material changes

• gas is formed and observed as bubbles

• the smell of the material changes

• the state of the material changes

Tags

NGSS.MS-PS1-2

Match the following changes to the vocabulary terms.

• evaporating

• gas to liquid

• freezing

• liquid to gas

• melting

• solid to liquid

• condensing

• liquid to solid

Tags

NGSS.MS-PS1-4

A student puts a cup of water on the windowsill. When he checks the water a week later, there is less water in the cup. What happened to the water?

• The water condensed.

• The water boiled away.

• The water evaporated.

• The water turned to ice.

Tags

NGSS.MS-ESS2-4

NGSS.MS-PS1-4

NGSS.MS-PS3-4

Which statement best describes condensation?

• Water vapor cools and freezes.

• Water vapor cools and evaporates.

• Water vapor cools and becomes a solid.

• Water vapor cools and becomes a liquid.