Flocabulary Changes

In physical changes, substances might change in _____ but not in _____.

• appearance, composition

• volume, state of matter

• texture, color

• weight, mass

What happens to atoms after a chemical change?

• They remain in the same place.

• They become bigger.

• They link up in different ways.

• They dissolve to form a mixture.

Which of the following properties can change during a physical change?

• shape

• pH level

• flammability

• reactivity

True or False: a physical change may produce a new substance.

• True

• False

Which of the following is an example of a physical change?

• sugar and oxygen reacting to produce water and carbon dioxide

• honey dissolving in tea

• a raw egg being cooked

• metal rusting after being left out in the rain

  melit

A physical change can sometimes result in a color change. Which of the following situations shows this?

• Milk turns yellow when it spoils.

• Dough becomes darker when it is baked into cake.

• A red candy dissolves and turns water pink.

• A match turns black when it is burned.

Which of the following physical changes shows a change in a substance’s state of matter?

• a piece of paper being torn in half

• clay being molded into a bowl

• an ice cube being crushed

• liquid water becoming steam

On a camping trip, Marta roasts a marshmallow in the campfire. The marshmallow grows, and then turns black. Marta notices that the roasted marshmallow smells and tastes differently than the uncooked marshmallows. What change has taken place, and how does Marta know?

• a chemical change because the marshmallow changed in taste, color and smell

• no change because the marshmallow is not a new substance

• only a physical change because the marshmallow changed size

• a chemical change because the marshmallow only changed in pH level