State Symbols & Predicting States of Matter

• What are state symbols used for in chemical equations?

  To indicate the state of each substance
• What state symbol is used for solids?


  s
• What state symbol is used for liquids?


  l
• What state symbol is used for gases?


  g
• What does the state symbol 'aq' represent?

  Aqueous, meaning dissolved in water
• What state symbol would you use for sodium in water?


  s
• What state symbol would you use for water in a chemical equation?


  l
• What state symbol is used for sodium hydroxide when dissolved in water?

  aq
• What state symbol is used for hydrogen gas?


  g
• At what temperature does water freeze?

  0 degrees Celsius
• At what temperature does water boil?

  100 degrees Celsius
• What state is water in at 800 degrees Celsius?

  Gas
• At what temperature does copper melt?

  1083 degrees Celsius
• What state is copper in at 800 degrees Celsius?

  Solid
• At what temperature does magnesium melt?

  650 degrees Celsius
• At what temperature does magnesium boil?

  1170 degrees Celsius
• What state is magnesium in at 800 degrees Celsius?

  Liquid
• What are the steps to predict the state of a substance at a certain temperature?

  • Identify the melting and boiling points
  • Compare the temperature to these points
  • Determine the state based on the comparison
• How do the states of water, copper, and magnesium differ at 800 degrees Celsius?

  • Water: Gas
  • Copper: Solid
  • Magnesium: Liquid