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Physical and Chemical Properties

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Physical and Chemical Properties

  1. 1. Physical and Chemical Properties
  2. 2. Physical Properties <ul><li>A physical property describes a characteristic of a substance that can be observed or measured </li></ul>
  3. 3. Qualitative Observation <ul><li>Qualitative properties can be observed using the senses and described with words </li></ul>
  4. 4. Quantitative Observation <ul><li>Quantitative properties are measured and recorded using numbers (have units) </li></ul>
  5. 5. Chemical Properties <ul><li>A chemical property describes the ability of a substance to change into a new substance/substances </li></ul><ul><li>Chemical properties can only be observed when a chemical change occurs </li></ul>
  6. 6. Colour and Lustre <ul><li>the light a substance reflects gives an object colour and lustre (shine) </li></ul>
  7. 7. Malleability <ul><li>a substance that can be pounded or rolled into sheets is said to be “malleable” </li></ul><ul><li>ex.) aluminum foil, gold, tin </li></ul>
  8. 8. Ductility <ul><li>Any solid that can be stretched into a long wire is called “ductile” </li></ul><ul><li>ex.) copper </li></ul>
  9. 9. State <ul><li>solid, liquid or gas at room temperature </li></ul>
  10. 10. Texture <ul><li>how the surface of a substance feels to the touch </li></ul>
  11. 11. Odour <ul><li>how a substance smells </li></ul><ul><li>odourless, burnt, flowery, putrid, spicy </li></ul>
  12. 12. Taste <ul><li>sweet, salty, bitter, sour, spicy </li></ul>
  13. 13. Clarity <ul><li>clear, transparent, translucent </li></ul>
  14. 14. Crystal Form <ul><li>solid mineral structure with a regular pattern of 3D shapes </li></ul><ul><li>e.g. cubic (salt) </li></ul>
  15. 15. Melting & Boiling Points <ul><li>MP - solid to liquid </li></ul><ul><li>BP - liquid to gas </li></ul>
  16. 16. Solubility <ul><li>ability to dissolve in a solvent (water) </li></ul>
  17. 17. Hardness <ul><li>a substance’s ability to resist being scratched </li></ul><ul><li>scale 1 to 10 </li></ul>
  18. 18. Mass <ul><li>amount of matter in a substance (g) </li></ul>
  19. 19. Volume <ul><li>amount of space a substance fills </li></ul>
  20. 20. Viscosity <ul><li>the thickness/ resistance of a fluid to flow </li></ul><ul><li>ex.) molasses has a high viscosity compared to water </li></ul>
  21. 21. Density <ul><li>the amount of mass in a given volume of a substance </li></ul><ul><li>ex.) the density of pure water is 1g/mL </li></ul>
  22. 22. Chemical Properties <ul><li>A chemical property describes the ability of a substance to change into a new substance/substances </li></ul><ul><li>Chemical properties can only be observed when a chemical change occurs </li></ul>
  23. 23. Combustibility <ul><li>ability of a substance to react with oxygen and release heat and light energy </li></ul>
  24. 24. Reaction with Acid <ul><li>ability of a substance to react with an acid and produce a gas </li></ul>
  25. 25. Corrosion <ul><li>ability of metal to react with air to produce metal oxides </li></ul>

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