Physical And Chemical Changes
There are some changes during which no new substances are formed. On the other hand, there are some other changes during which new substances are formed. So, on the basis of whether new substance are formed or not, we can classify all the changes into two groups physical chnges and chemical changes We will now discuss physical changes and chemical changes in deta.l,one by one. Let us start with the physical changes.
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Matter in Our Surroundings - Notes
1. The Case of a Liquid Solute Dissolved in a Liquid Solvent
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2. 11. Metals Usually Have a Silver or Grey Colour
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8. 3. Non-Metals are Bad Conductors of Heat and Electricity.
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9. 7. Non-Metals may be Solid, Liquid or Gases at the Room Temperature.
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10. 1. Separation by a Suitable Solvent
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12. To Study the Properties of a Colloid
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15. To Separate a Mixture of Alcohol and Water
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16. 6. Metals are Usually Strong. They Have High Tensile Strength.
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18. To Study the Properties of a Solution
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20. 3. Metals are Good Conductors of Heat and Electricity.
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23. Separation Of Mixture Of a Solid And a Liquids
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25. Chemical Formula for daily use material
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28. To Study the Properties of a Compound of Iron and Sulphur
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32. 6. Non-Metals are Not Strong. They Have Low Tensile Strength.
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34. 4. Metals are Lustrous (or Shiny), and can be Polished.
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37. 7. Metals are Solids at the Room Temperature
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42. To Separate the Salt-Water Mixture (or Salt-Solution)
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43. Separation of Mixture Of Two Solids
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46. 11. Non-Metals Have Many Different Colours.
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