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The Properties of Matter Looking at Matter at the  Molecular Level
Describing Matter <ul><li>The characteristics or properties of an object can help you identify the substance. </li></ul><u...
Properties of Matter <ul><li>There are:  </li></ul><ul><ul><li>Physical Properties </li></ul></ul><ul><ul><li>Chemical Pro...
Physical Properties <ul><li>Things that describe the object are physical properties. </li></ul><ul><li>Physical properties...
Physical properties <ul><li>Boiling point - Viscosity </li></ul><ul><li>Melting point - Density </li></ul><ul><li>Volatili...
Chemical Properties <ul><li>Chemical properties describe a substance based on its ability to change into a new substance w...
Chemical properties <ul><li>Burns in air </li></ul><ul><li>Explodes </li></ul><ul><li>Tarnishes </li></ul><ul><li>Decompos...
Matter undergoes changes <ul><li>There are 2 types of changes: </li></ul><ul><li>Physical changes </li></ul><ul><li>Chemic...
Physical Changes <ul><li>A physical change is a change that affects one or more physical properties of a substance. </li><...
Physical Changes <ul><li>Crumpling a piece of paper </li></ul><ul><li>Pulling copper into a thin wire </li></ul><ul><li>Cu...
Chemical Changes <ul><li>A chemical change occurs when one or more substances are changed into entirely new substances wit...
Chemical changes <ul><li>Burning a log of wood </li></ul><ul><li>Combustion of gasoline </li></ul><ul><li>Digestion of foo...
Signs of chemical changes <ul><li>Color change </li></ul><ul><li>Fizzing or bubbling (gas production) </li></ul><ul><li>En...
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Properties of matter

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Transcript of "Properties of matter"

  1. 1. The Properties of Matter Looking at Matter at the Molecular Level
  2. 2. Describing Matter <ul><li>The characteristics or properties of an object can help you identify the substance. </li></ul><ul><li>Substances have unique properties and characteristics. </li></ul>
  3. 3. Properties of Matter <ul><li>There are: </li></ul><ul><ul><li>Physical Properties </li></ul></ul><ul><ul><li>Chemical Properties </li></ul></ul>
  4. 4. Physical Properties <ul><li>Things that describe the object are physical properties. </li></ul><ul><li>Physical properties can also be observed or measured without changing the identity of the matter. </li></ul>
  5. 5. Physical properties <ul><li>Boiling point - Viscosity </li></ul><ul><li>Melting point - Density </li></ul><ul><li>Volatility - Malleability </li></ul><ul><li>Color - Electrical conductivity </li></ul><ul><li>Taste </li></ul><ul><li>Hardness </li></ul><ul><li>Odor </li></ul><ul><li>Ductility </li></ul>
  6. 6. Chemical Properties <ul><li>Chemical properties describe a substance based on its ability to change into a new substance with different properties. </li></ul><ul><li>Chemical properties cannot be observed with your senses. </li></ul><ul><li>Chemical properties aren’t as easy to observe as physical properties. </li></ul>
  7. 7. Chemical properties <ul><li>Burns in air </li></ul><ul><li>Explodes </li></ul><ul><li>Tarnishes </li></ul><ul><li>Decomposes when heated </li></ul><ul><li>Reacts with water, metals, etc. </li></ul><ul><li>Is toxic </li></ul><ul><li>Decomposes by electricity </li></ul>
  8. 8. Matter undergoes changes <ul><li>There are 2 types of changes: </li></ul><ul><li>Physical changes </li></ul><ul><li>Chemical changes </li></ul>
  9. 9. Physical Changes <ul><li>A physical change is a change that affects one or more physical properties of a substance. </li></ul><ul><li>Physical changes do not form new substances! EX: ice melting or sugar dissolving </li></ul><ul><li>Physical changes are easy to undo. </li></ul>
  10. 10. Physical Changes <ul><li>Crumpling a piece of paper </li></ul><ul><li>Pulling copper into a thin wire </li></ul><ul><li>Cutting wood </li></ul><ul><li>Tearing a piece of aluminum foil </li></ul><ul><li>Breaking glass </li></ul><ul><li>Cloud forming in the sky </li></ul><ul><li>Freezing water </li></ul>
  11. 11. Chemical Changes <ul><li>A chemical change occurs when one or more substances are changed into entirely new substances with different properties. </li></ul><ul><li>You can observe chemical properties only when a chemical change might occur! </li></ul><ul><li>Examples of chem. changes: </li></ul><ul><li>baking a cake </li></ul><ul><li>rusting </li></ul>
  12. 12. Chemical changes <ul><li>Burning a log of wood </li></ul><ul><li>Combustion of gasoline </li></ul><ul><li>Digestion of food </li></ul><ul><li>Lightning a match </li></ul><ul><li>Rusting nail </li></ul><ul><li>Cooking a cake </li></ul><ul><li>Photosynthesis </li></ul>
  13. 13. Signs of chemical changes <ul><li>Color change </li></ul><ul><li>Fizzing or bubbling (gas production) </li></ul><ul><li>Energy change </li></ul><ul><li>Production of light, sound, or odor. </li></ul><ul><li>Formation of a precipitate </li></ul><ul><li>Chemical changes are not usually reversible! </li></ul>
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