chem

• Physical change


  A change that does not affect the identity of a substance
• Chemical change


  A change that affects the identity of a substance
• Physical changes


  • Cutting
  • Brewing
• Chemical changes


  • Cooking
  • Burning
• Classifying changes


  1. Determine if physical or chemical

  2. Examples: water freezing (physical), iron rusting (chemical)
• Reactants


  The starting substances
• Products

  The new substances
• name the reactants products word equation and the evidence in a chemical change