Chemical Changes

what is the definition of physical change?

• any change that results in the formation of new chemical substances. 
• rusting
• changes affecting the form of a chemical substance, but not its chemical composition.
• any property that is measurable, whose value describes a state of a physical system

what is the definition of chemical change?

• any change that results in the formation of new chemical substances. 
• changing clothes
• matter cannot be created or destroyed, only change form
• changes affecting the form of a chemical substance, but not its chemical composition.

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

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

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

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

• Chemical Change
• Physical Change

Are hard boiled eggs a physical or chemical change?

• Physical
• Chemical

When you break a cracker into pieces it is a 

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

Is melting iron a physical or chemical change?

• Physical
• Chemical

When baking soda and vinegar mix it creates a bubbly mess. Is this a chemical or physical change?

• Physical
• Chemical