Chapters 3,4,and 5 Review

A chemical change is a change in:

• the appearance of a substance. 
• the chemical composition of a substance. 
• the type of matter. 
• the way matter is created. 

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

• Chemical Change
• Physical Change

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

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

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

Which of the following IS a chemical change

• using chalk
• water freezing
• slicing cheese
• digestion

Is spoiling food a physical or chemical change?

• phyiscal
• chemical

Using dye to change the color of a shirt green.

• Chemical Change
• Physical Change

A physical changed is a change in:

• the appearance of a substance. 
• the chemical composition of a substance. 
• the way a substance is created. 
• a chemical reaction between two substances.

Stanley left an ice cube on his kitchen counter. An hour later, Stanley observed that the ice cube melted. Which statement best describes this change?

• Ice melting is a physical change because a new substance is created.
• Ice melting is a chemical change because a new substance is created.
• Ice melting is a chemical change because it may be reversed.
• Ice melting is a physical change because it may be reversed.