Learn S'more About Reactions
Physical and Chemical Reactions
Physical Reactions
A physical change rearranges the molecule, but doesn't change the internal structure. Meaning it changes the outward appearance, but doesn't completely change the chemical layout.
Physical change when the marshmallow is just warmed.
Chemical Reactions
A chemical change is any change that results in the formation of new chemical substances. At the molecular level, chemical change involves making or breaking of bonds between atoms.
Chemical change when the marshmallow is burnt. It melts the sugars, as a cause of oxidation.
Chemical changes vs. Physical changes
Boiling Water
Is this a chemical or physical reaction?
Yeast Making Bread Rise
Is this a chemical or physical reaction?
Rust on a Nail
Is this a chemical or physical reaction?
Mixing Baking Soda and Vinegar
Is this a chemical or physical reaction?
S'mores
Is this a chemical or physical reaction?
Broken Glass
Is this a chemical or physical reaction?
Melting Ice Cube
Is this a chemical or physical reaction?
Wood Burning
Is this a chemical or physical reaction?
Crushed Can
Is this a chemical or physical reaction?
Physical and Chemical Change
Question?
What are some physical and chemical changes that you can think of?