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. 7. Non-Metals may be Solid, Liquid or Gases at the Room Temperature.
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10. 6. Metals are Usually Strong. They Have High Tensile Strength.
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11. 3. Non-Metals are Bad Conductors of Heat and Electricity.
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18. Chemical Formula for daily use material
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27. 4. Metals are Lustrous (or Shiny), and can be Polished.
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29. To Study the Properties of a Compound of Iron and Sulphur
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31. To Study the Properties of a Suspension
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35. To Study the Properties of a Solution
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36. 7. Metals are Solids at the Room Temperature
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39. To Separate a Mixture of Alcohol and Water
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41. Experiment to Obtain Coloured Component (Dye) From Ink
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43. 8. Non-Metals Have Comparatively Low Melting Points and Boiling Points
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47. 6. Non-Metals are Not Strong. They Have Low Tensile Strength.
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49. Solutions, Suspensions And Colloids
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