Chemical Change Change in the identity of the substance.

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Presentation transcript:

Chemical Change Change in the identity of the substance

Baking Soda + Vinegar Sodium bicarbonate and vinegar => NaHCO3 + CH3COOH CH3COO-Na+ + H2O + CO2 Sodium bicarbonate and vinegar => Sodium acetate and water and carbon dioxide Heat is released

It’s a chemical change if…. It burns Temperature changes without heating/cooling

It’s a chemical change if... It bubbles (makes a gas) Reacts with acid

It’s a chemical change if... It changes color It forms a precipitate (a solid)

It’s a chemical change if... Corrosion (Rust or Oxidation)

What kind of change is it if someone... Tears up paper? Physical change Mixes salt and water?

What kind of change is it if someone... Burns paper? Chemical change Evaporates salt water? Physical change

How is a burning candle both?