Chemical and Physical Changes

Which of the following is a sign that a chemical reaction has occurred?

• change in shape
• melting
• formation of a gas
• dissolving

Is melting butter for popcorn a chemical or physical change?

• chemical
• physical

Is burning wood a chemical or physical change?

• chemical
• physical

Is hammering wood together to build a house a chemical or physical change?

• chemical
• physical

A change in the size, shape, or state of matter.

• chemical change
• physical change
• chemical reaction
• electron change

Chemical Properties are characteristics that are observed or measured without changing matter.

• True

• False

A chemical change begins with and ends with the same kind of matter

• True

• False

Which is and example of a chemical property?

• change in odor

• ice melting

• flammability

• density

Which is and example of a physical property?

• change in odor

• ice melting

• flammability

• density

Which is an example of physical property?

• Souring Milk

• Cutting Would

• Acidity

• Volume