5.P.2.3 #7

When coffee is poured into a cup of ice, the ice begins to melt and mix

with the coffee. Which statement best describes this change?

• The ice melting is a chemical change because the water changes

  form.

• The ice melting is a physical change because the water may be frozen

  again.

• The water and coffee mixing is a chemical change because the liquids

  change color.

• The water and coffee mixing is a physical change because the mixture

  forms bubbles.

A family goes camping and creates a fire to roast marshmallows. The

next morning, the kids notice that the logs are no longer there, and all

that remains are ashes. Which best explains why the ashes from a log

are evidence of a chemical change?

• The color of the wood changed from brown to gray.

• The wood breaks down into smaller matter when burned.

• The ashes cannot be put back together to create a log again.

• Something was added to the log, and it cannot be removed.

Tags

NGSS.MS-PS1-2

Which best explains why burning wood is a chemical change?

• The process occurs quickly.

• The process can be reversed.

• The process can be repeated.

• The process creates a new substance.

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

Which type of change occurs when the size, shape, appearance, or

volume of a substance is changed without changing its composition?

• physical

• chemical

• radiation

• nuclear

Tags

NGSS.MS-PS1-4

Which statement best describes why baking a cake is an example of a

chemical change?

• The process takes place in an oven.

• The process requires heat energy.

• The process cannot be reversed.

• The process can be repeated.

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-4

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

Which best explains why boiling water is an example of a physical

change?

• The heat causes steam.

• Heat is added, causing evaporation.

• Heating the water causes solids to form.

• The water changes from a liquid to a gas.

Tags

NGSS.MS-PS1-4

Which is an example of a physical change?

• ice melting into water

• fire burning a sheet of paper

• a nail rusting after being outside

• a penny turning green when placed in chemicals

What best explains the physical change of liquid water to ice?

• The liquid water was frozen.

• The liquid water was heated.

• The liquid water was melted.

• The liquid water was condensed.

Tags

NGSS.MS-PS1-4

Which is the best example of a physical change?

• firewood burning

• firewood decaying

• firewood getting wet