Complete each step on a piece of notebook paper. Properties of Matter Creating a diagram that shows Melting and Boiling Points “THE LINE” Complete each step on a piece of notebook paper. You MUST practice drawing this line OVER and OVER again!! This must be memorized!

Draw a line

Label it Solid, Liquid, and Gas Solid Liquid Gas

Insert lines at 0 degrees and 100 degrees Solid Liquid Gas 0 degrees 100 degrees

Add a red line and arrow showing that Thermal (heat) energy is being added. Solid Liquid Gas 0 degrees 100 degrees Adding Thermal Energy

Add a blue line and arrow showing that Thermal (heat) energy is being removed. Solid Liquid Gas 0 degrees 100 degrees Adding Thermal Energy Removing Thermal Energy

If you go to the right on the line you are adding energy to the molecules. If we add energy to Solid and get it hotter than 0 degrees we make it a Liquid. This is called melting Melting Solid Liquid Gas 0 degrees 100 degrees Adding Thermal Energy Removing Thermal Energy

If we go to the left on the line we are removing energy from the molecules. If we have liquid and remove energy to the point it is below 0 degrees we cross the freezing point and the water becomes ice Freezing Melting Solid Liquid Gas 0 degrees 100 degrees Adding Thermal Energy Removing Thermal Energy

So, 0 degrees Celsius is BOTH the freezing and melting point of water So, 0 degrees Celsius is BOTH the freezing and melting point of water. It just depends on if you are adding or removing energy as you cross the 0 degree temperature point. Freezing Melting Solid Liquid Gas 0 degrees 100 degrees Adding Thermal Energy Removing Thermal Energy

If we are adding energy as we cross 100 degrees we go from liquid to gas. This is the boiling point. Freezing Boiling Melting Solid Liquid Gas 0 degrees 100 degrees Adding Thermal Energy Removing Thermal Energy

If we are removing energy as we cross 100 degrees we go from gas to liquid. This is the condensation point. Condensation Freezing Boiling Melting Solid Liquid Gas 0 degrees 100 degrees Adding Thermal Energy Removing Thermal Energy

In Solids the molecules are packed together tightly and vibrate against one another. Condensation Freezing Boiling Melting Solid Liquid Gas 0 degrees 100 degrees Adding Thermal Energy Removing Thermal Energy

In Liquids the molecules are farther apart and sliding over each other In Liquids the molecules are farther apart and sliding over each other. They have more movement than solids. Condensation Freezing Boiling Melting 0 degrees 100 degrees Solid Liquid Gas Adding Thermal Energy Removing Thermal Energy

In a Gas the molecules are spaced far apart and moving about quickly Adding Thermal Energy Melting Boiling Solid Liquid Gas 0 ˚C 100 ˚C Freezing Condensing Removing Thermal Energy

Interesting Facts Boiling and melting points are a physical property of matter Every substance in existence has a boiling and melting point Even diamonds have a melting and boiling point. When a diamond boils it turns into pure carbon dioxide gas

Your Task Create a poster sized drawing of the changing states of matter. If you email me a picture of your poster hanging on your bedroom wall or bathroom mirror I will give you 25 extra Einstein Dollars! If you can’t send a picture you can bring in a note signed by your parent/guardian saying it is up there.