Chemical & Physical Changes

Which is a way that a piece of paper can go through a chemical change?

• fold the paper in half
• soak the paper in water
• burn the paper with fire
• cut the paper with scissors

Which of these is an example of a new substance being formed?

• a nail rusting
• a wall being painted
• water changing to steam
• paper being folded

Which is an example of a chemical change?

• baking a cake
• freezing water
• crushing a can
• breaking an egg

Which example best describes a physical change?

• iron rusting
• charcoal burning
• an ice cube melting
• a marshmallow burning

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.

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

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

When you break a cracker into pieces it is a 

• Chemical change
• Physical change
• Chemical Weathering
• Physical Weathering

What is a chemical change?

• Forming a new substance

• When two or more substances combine to make a greater one

• When two or more substances combine to make a new chemical substance

• Combing substances

What is a physical change?

• I Don't care!

• A change in the form or appearance of a substance

• a change in a substance to something new

• molecules interacting and changing into a new substance

Which of the following is NOT an example of chemical change?

• sour milk
• burning wood
• breaking a pencil
• rust