Chapter 2: Lesson 3 - Physical & Chemical Changes

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

• shape

• pH level

• flammability

• reactivity

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

A physical change can sometimes result in a color change. Which of the following situations show 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

Which of the following could indicate that a chemical change took place?

• Change in color

• Formation of a precipitate

• Formation of Gas

• All are correct

The formation of a solid when two liquids combine is called?

• Solidification

• Freezing

• Precipitate

• Solubility

The difference between a Physical change and a Chemical change is…

• Physical change is only a change to the outside appearance.

• Chemical change is when matter is changed into something new.

• Atoms are rearranged in chemical changes & not in physical.

• All are correct.

Which type of change is most often easily reversed?

• Chemical

• Physical

• Both a physical and chemical change.

• Neither a physical or chemical change.

Identify what type of change happening in the picture below...

• Chemical Change

• Physical Change

• Endothermic Reaction

• Exothermic Reaction

Identify what type of change happening in the picture below...

• Chemical Change

• Physical Change

• Endothermic Reaction

• Exothermic Reaction