True or false: combustion (burning) is an example of a physical change

Breaking glass

Physical or chemical property?
-A new substance is formed (nonreversible)

True or false: A physical change can usually be seen with the human eye

Combustion

State of matter can be changed but can be changed back

True or false: In a chemical change, a whole new substance is made, it can't be reversed

Milk going bad

Usually involves combustion

True or false: The green pennies we made in the lab activity is an example of a physical change

Cutting Paper

Isn't usually visible

rusting iron

Change in size, color, shape, and state of matter