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Chemical reaction (How to tell (Color, Bubble, Odor, Density, Tempature…
Chemical reaction
How to tell
Color
Bubble
Odor
Density
Tempature increase
Boiling point
Tempature decrease
Atoms
Atoms creat everything
Atoms do not disappear
Atoms are the basic building blocs
Atoms stay the same unless you cut it in half
Boiling point
Increase
When the boiling point get’s higher
Decrease
When the Boiling point get’t lower
Example
Baking soda and Vinagar
Elephant toothpaste
Coca-Cola and mentos
Chemical change
When two substances are combined
Example
Baking soda and Vinagar
Physical change
When a substance changes appearance
Example
Shredding paper
Exothermic
When a chemical gets warmer
Endothermic
When chemical gets colder