Physical and Chemical change

Which of the following tells you that a chemical change may have occurred?

• Change Shape

• Melting

• Vaporizing

• Change in color

What happens in all chemical changes?

• Change in state of matter

• A new substance is formed

• Bubbles are produced

• An explosion

Which of the following could not indicate that a chemical change took place ?

• change of color

• change in temperature or energy

• formation of gases

• changes are reversible

Which of the following is an example of physical change ?

• Mixing baking soda and vinegar together and its cause bubbles and foam.

• A glass cup falls from counter and shatters on the ground.

• Lighting a piece of paper on fire and the papers burns up and leaves ashes.

• Baking a birthday cake for your mother.

Is melting butter for popcorn a chemical or physical change?

• chemical
• physical

Freezing Juice?

• Physical Change

• Chemical Change

A change where one or more new substances are created.

• Physical Change 
• Chemical Change 

Fizzing, foaming, and burning are all examples of

• Chemical change
• Physical change

Which of these does NOT happen during a chemical change?

• Atomic bonds are formed or break apart
• New substance(s) are formed with different chemical properties
• The number of atoms in the reaction stays the same
• The chemical properties of the beginning substance(s) are the same as those of the end product(s)

Photosynthesis is an example of a

• physical change
• chemical change