Physical and Chemical Change

Which of the following is NOT an example of a physical change?

• crumpled paper
• pencil sharpening
• shrunken clothing
• sour milk

Baking a cake by mixing flour, sugar, chocolate powder, eggs, and milk, and then heating them in the oven.

• Chemical Change
• Physical Change

An gel ice pack getting cold after you put it in the freezer for an hour.

• Chemical Change
• Physical Change

Is making salt water to gargle with a physical or chemical change?

• physical
• chemical

Is spoiling food a physical or chemical change?

• phyiscal
• chemical

Using dye to change the color of a shirt green.

• Chemical Change
• Physical Change

what is condensing?

• physical property
• chemical property
• chemical change
• physical change

what is digestion?

• body function
• chemical change
• physical change

One cup of water is left outside for two days when it was checked there was only half a cup left. What happened?

• evaporation; chemical change
• condensation; physical change 
• evaporation; physical change
• condensation; chemical change

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.