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Andreea

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Materials can undergo physical changes when heated, frozen, bent or compressed. Mixtures can be either heterogeneous, where the individual substances are visible, or homogeneous, where they are not. Natural materials like wood, cotton, wool and minerals come from plants, animals and nature, while manufactured materials are transformed from natural sources through processing. The three R's of reduce, reuse and recycle are important to conserve natural resources and reduce waste.

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MATTER By Andreea
Andreea
CHANGES IN MATTER ? Physical changes happen when we:heat,freeze,bend,twist,stretch and squash a substance.
MIXTURES ? Mixtures can be heterogenous or homogenous mixture ? In a heterogenous mixture it is easy to see the different subatances. ? In a homogenous mixture it isn?t possible to see the different subtances.
NATURAL AND MANUFACTURED MATERIALS Materials can be natural and manufactured. Natural materials come from nature and can come from plants,animals and minerals. Wood, cotton and natural rubber come from plants. Wool,leather and silk come from animals.
? Rocks and oil come from minerals. Manufactured materials are made from natural materials which are transformed in a manufacturing process.We manufacture from ,and we use to make , and fabrics such as
THE THREE Rs ? If we take to many natural resources they will run out.This is so important Reduce,Reuse and Recycle. ? We should try to reduce the amount of materials and the waste we produce.Buy products with little or no packaging,then put the packaging in the correct recycling bin. ? We can reuse plastic shopping bags. We can clean packaging such as boxes and jars and use then again.
? Recycle means to make something new from something we have used. ? We can recycle glass, plastic aluminium,paper,cars,elctrical appliances,furniture and many other things too.
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Andreea

  • 3. CHANGES IN MATTER ? Physical changes happen when we:heat,freeze,bend,twist,stretch and squash a substance.
  • 4. MIXTURES ? Mixtures can be heterogenous or homogenous mixture ? In a heterogenous mixture it is easy to see the different subatances. ? In a homogenous mixture it isn?t possible to see the different subtances.
  • 5. NATURAL AND MANUFACTURED MATERIALS Materials can be natural and manufactured. Natural materials come from nature and can come from plants,animals and minerals. Wood, cotton and natural rubber come from plants. Wool,leather and silk come from animals.
  • 6. ? Rocks and oil come from minerals. Manufactured materials are made from natural materials which are transformed in a manufacturing process.We manufacture from ,and we use to make , and fabrics such as
  • 7. THE THREE Rs ? If we take to many natural resources they will run out.This is so important Reduce,Reuse and Recycle. ? We should try to reduce the amount of materials and the waste we produce.Buy products with little or no packaging,then put the packaging in the correct recycling bin. ? We can reuse plastic shopping bags. We can clean packaging such as boxes and jars and use then again.
  • 8. ? Recycle means to make something new from something we have used. ? We can recycle glass, plastic aluminium,paper,cars,elctrical appliances,furniture and many other things too.