Chemical Changes

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Chemical Changes
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Chemical Property

• describes how a substance reacts to other types
  of matter

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A few examples

• flammability
• corrosive
• reacts with oxygen
• solubility
• reacts with water
• PH

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Chemical Change

• When one or more substances are changed into new
  substances with different properties

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Examples
Burning
An apple turning brown (oxidation)
Rusting
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Before
After
Sugar and Sulfuric Acid reacting
Alka- Seltzer reacting with H20
Fireworks
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Evidence of Chemical Change

• Heat given off or absorbed
• New gas formed
• A color change
• a solid precipitate forms
• Change in odor
• Light production

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Law of Conservation of Mass

• Matter cannot be created or destroyed
• The mass you start with is the mass you end with