## Mr.Patterson

 Matter
 Objects that take up space and have mass
 Mass
 is a measure of the amount of matter in an object or material
 Volume
 The amount of space matter takes up
 Solid
 State of matter that has a definite shape and volume
 Liquid
 State of matter that has a definite volume but no definite shape
 Gas
 State of matter that has no definite shape and no definite volume
 Mixture
 Physical combination of two or more substances
 Compound
 Chemical combination of two or more substances
 Conservation of mass
 Whether there is a chemical change or a physical change the amount of mass always stays the same
 Which states of matter have a definite volume
 Both Liquid and Solid
 What happens when energy is taken away from a liquid? what happens when energy is added to a solid?
 When energy is taken away from a liquid it becomes a solid because the molecules are moving slower. When energy is added to a solid the molecules move faster therefore turning it in to a liquid
 What is the difference between a chemical and physical change?
 A chemical change mean the substance becomes a new substance and cant be changed back to the original substance (cookie batter to a baked cookie) A physical change is a change where the original substance can move back and fourth between the new form and old for (ice to water and water to ice)
 What are some physical properties of matter that identify different substances?
 Include but not limited to State, Size, Color, Smell, Volume, Mass, Density
 Explain way burning a substance would be considered a CHEMICAL CHANGE
 It is considered a CHEMICAL CHANGE because it brings about a new substance. Chemical bonds aer broken and new bonds are formed. For example WHEN WOOD BURNS THE ATOMS OF THE CARBON AND HYDROGEN IN THE WOOD JOIN WITH THE MOLECULES IN THE AIR AND A CHEMICAL FORMS CALLED CARBON DIOXIDE.
 EXPLAIN HOW HETEROGENEOUS MIXTURES AND HOMOGENNOUS MIXTURES ARE ALIKE.EXPLAIN HOW THEY ARE DIFFERENT
 BOTH MIXTURES ENTAIL THE COMBINATION OF TWO OR MORE SUBSTANCES. They KEEP THEIR ORIGINAL PROPERTY IF THEY ARE MIXED. They ARE DIFFERENT BECASUE HETEROGENIOUS MIXTURES HAS SUBSTANCES THAT ARE NOT EVENLY SPREAD AND HOMOGENEOUS HAS SUBSTANCES THAT ARE EVENLY SPREAD AND DISTRIBUTED
 DO MOLECULES IN WATER VAPOR HAVE MORE OR LESS ENERGY THAN MOLECULES IN LIQUID WATER? EXPLAIN YOUR ANSWER.
 Molecules IN WATER VAPOR HAVE MORE ENERGY BECASUE IT IS A GAS MEANING THAT THE MOLICULES ARE MOVING FASTER WHICH CREATES MORE ENERGY THEN IS FOUND IN LIQUID WATER
 Explain why the melting point and freezing point of a substance is the same
 The melting point and freezing point of a substance is the same because the melting point is when a solid matter of a substance turns in to a liquid at a certain temperature, the freezing point is when the liquid matter of the same substance turns in to a solid at the same temperature.
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