physical and chemical changes
TRANSCRIPT
Changes
Temporary and Permanent
Is This Matter Changing?
? freezing
? cutting
? bending
? heating
How is it changing?
Is this Matter Changing into something new?
How is it changing?
Even though the wood has changed shape, the wood is still wood!
Is this matter changing into something new?
How is it changing?
Is this matter changing into something new?
How is it changing?
Is this matter changing into something new?
How is it changing?
Physical Changes…Nothing New• Ice cream to melted ice cream?
• Chocolate to melted chocolate?
• Ice, to water, to water vapor?
• Steel to molten steel?
Temporary Changes
PERMANENT CHANGES
Fireworks are metals (magnesium and copper) that change chemically as they light up the night skies.
SIGNS OF CHEMICAL CHANGES
• Color Change
SIGNS OF CHEMICAL CHANGES
• Energy released
SIGNS OF CHEMICAL CHANGES
• Energy absorbed
SIGNS OF CHEMICAL CHANGES
• When food spoils, it undergoes a chemical change.
• Odor released
SIGNS OF CHEMICAL CHANGES
• Not easily reversed
PERMANENT CHANGES
PERMANENT CHANGES
PERMANENT CHANGES
PERMANENT CHANGES
PERMANENT CHANGES