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Matter

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Matter

  1. 1. GENERAL CONCEPTS MATTER: IT IS ALL AROUND US. IT CAN BE SOLID, LIQUID OR GAS. MASS: IT IS HOW MUCH MATTER AN OBJECT HAS (FOR EXAMPLE, KILOGRAMS, GRAMS, METRIC TONES, LITRES, ETC.) VOLUME: IT IS THE QUANTITY OF SPACE THAT AN OBJECT TAKES UP.
  2. 2. STATES OF MATTER Do they have a definite shape? Do they have a definite volume? SOLIDS Yes, they do. Yes, they do because they always take up the same space .Their particles are closely packed. LIQUIDS No, they don’t, because they adapt to the shape of the container they are in. Yes, they do because they always take up the same space .Their particles are packed. GASES No, they don’t because they adapt to the shape of the container they are in. No, they don’t because they expand to fill the container they are in. Their particles are not packed.
  3. 3. CHANGES IN MATTER THERE ARE TWO TYPES OF CHANGES:
  4. 4. PHYSICAL CHANGES Physical changes happen when matter changes shape and changes state but the substance does not change.
  5. 5. EXAMPLES OF PHYSICAL CHANGES
  6. 6. WHEN WE FREEZE A SUBSTANCE WE HAVE A PHYSICAL CHANGE
  7. 7. WHEN WE BEND A SUBSTANCE WE HAVE A PHYSICAL CHANGE
  8. 8. WHEN WE TWIST A SUBSTANCE, WE HAVE A PHYSICAL CHANGE
  9. 9. WHEN WE SQUASH A SUBSTANCE, WE HAVE A PHYSICAL CHANGE
  10. 10. WHEN WE HEAT A SUBSTANCE, WE HAVE A PHYSICAL CHANGE
  11. 11. WHEN WE STRETCH AN OBJECT, WE HAVE A PHYSICAL CHANGE
  12. 12. A CHEMICAL CHANGE IS WHEN A NEW SUBSTANCE (OR MATTER) IS PRODUCED.
  13. 13. When we burn something
  14. 14. When we expose a substance to air we have a chemical change
  15. 15. A rusted pipe
  16. 16. When we cook something, we have a chemical change This is also called a mixture
  17. 17. MIXTURES A mixture is something that contains two or more substances. Mixtures can be HETEROGENEOUS or HOMOGENEOUS.
  18. 18. HETEROGENEOUS In heterogeneous mixtures, it is easy to see the different substances.
  19. 19. HOMOGENEOUS In homogeneous mixtures, it isn’t possible to see the different substances.
  20. 20. CURIOUS EXAMPLES OF MIXTURES WATER (H2O) IS MADE UP OF ONE OXYGEN MOLECULE AND TWO HYDROGEN MOLECULES
  21. 21. H2O NH3 CO2 CH4
  22. 22. GRANITE IS MADE UP OF THREE MINERALS: QUARTZ, FELDESPATE AND MICA

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