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Matte runit6 (renew)pdf


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Matte runit6 (renew)pdf

  1. 1. MATTER
  2. 2. Everything in the universe and all the objects and living things on Earth are made up of matter. Snow is made up of matter. People are made up of matter. The ground is made up of matter.
  3. 3. All matter has got two general properties Mass The mass is the amount of matter of an object. Mass is measured in kilograms. Volume The volume is the space an object occupies. We measure volume in litres.
  4. 4. Other properties of matter. Matter has characteristics properties that let us disinguish one type of matter from another. Properties ELASTICITY DENSITY HARDNESS TRANSPARENCY WATER RESISTANCE
  5. 5. DENSITY Density is the relationship between an object´s mass and volume. All matter has its own density. steel straw
  6. 6. HARDNESS Matter is resistant when it is difficult to scratch or cut. Matter is fragile when it is easy to break. scratch
  7. 7. ELASTICITY Matter is elatic when it returns to its original shape after stretching or bending it. Elastic rubber bands
  8. 8. WATER RESISTANCE Matter is waterproof when liquids cannot go through it waterproof permeable What´s the difference?
  9. 9. TRANSPARENCY Matter is transparent when light can pass through it. Glass is a transparent material.
  10. 10. We use the characteristic properties of matter for specific purposes. We use glass for its transparency We use steel for its hardness Beams made of steel.
  11. 11. The three states of the matter Solid Liquid Ice water Gas Water steam
  12. 12. Solid Solid objects have got their own shape Solid objects occupy the same space Solid objects maintain their volume CHAIR DOOR SHARPENER FORK SHOE
  13. 13. Liquid Liquids don´t have their own shape. Liquids have the shape of the container. Liquids maintain the volume.
  14. 14. Gas Gases have the shape of the container. Gases don´t maintain the volume.
  15. 15. Changes in matter Physical changes The substance changes but matter does not change. Watter freezes, but is still water. chemical changes Chemical changes créate New substances and matter changes. Wood changes Into ashes and gases when it burns.
  16. 16. Types of changes. There are two types of changes in matter. Irreversible changes: it is when Matter cannot return to its original state. Reversible changes: it is when Matter can return to its original state. Heat often causes these types of changes When something becomes hot, it expands and it volumen is bigger. When it becomes cold, it contracts and its Volume is smaller.
  17. 17. Physical changes Temperature can change the state of matter. A solid change to a liquid Fusion Evaporation A liquid change to a gas.
  18. 18. Temperature can change the state of matter. A liquid change to a solid. Solidification. Condensation. A gas change to a liquid.
  19. 19. Melting is when a solid becomes a liquid. For example snow melts in warm weather. Evaporation is when a liquid becomes a gas. For example, water in a puddle evaporation. Boiling is when a liquid reaches a high temperature and become a gas. Water boils at 100Cº .other liquids boil at different temperaturas. Condensation is when a gas becomes a liquid. For example. Water vapour form condensation on windows when the weather is cold. Solidification is when a liquid becomes a solid. For example, water changes into ice at cold temperaturas.
  20. 20. Chemical changes When chemical changes accur, the composition and properties of matter change. However, its mass stays the same. Oxidation, combustión and fermentation are chemical changes. Oxidation accurs when a bustance mixes with the oxygen in the air and makes a new substance. For example, a piece of iron that stays outside becomes rusty. These marks are iron oxide. Combustion occurs when a material mixes with oxygen and burns. Material like Wood paper or gasolina are combustible. Fermentation there are Natural fermentation and Artificial fermentation. Natural fermentation is the chemical change when food decays. Artificial fermentation is the chemical change that people make. For Example yogurt, wine and bread.
  21. 21. The brown rust on the bus is iron oxide. Fireworks produce light, sound and some heat. Milk ferments to become yogurt and cheese.