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Chemistry (Chemical Changes (` (Burning wood , Baking a cake ,…
Chemistry
Endothermic Reactions
Energy breaking bonds
Reactants + Energy ---> Product
EXAMPLES
Cooking eggs
Melting solid salts
Chemical Changes
Not easily reversible
Substances change
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Burning wood
Baking a cake
Fireworks exploding
Iron rusting
Milk gone sour
Physical Changes
Changes are reversible
Properties change
Includes changes in states of matter
Substances remain unchanged
Exothermic Reactions
More energy released
Reactants ---> Products + Energy
EXAMPLES
Crystallizing liquid salt
Nuclear fission
