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.
Notes
Matter in Our Surroundings - Notes
1. 11. Metals Usually Have a Silver or Grey Colour
Show Notes
2. The Case of a Liquid Solute Dissolved in a Liquid Solvent
Show Notes
8. 7. Non-Metals may be Solid, Liquid or Gases at the Room Temperature.
Show Notes
9. 3. Non-Metals are Bad Conductors of Heat and Electricity.
Show Notes
10. 1. Separation by a Suitable Solvent
Show Notes
13. 6. Metals are Usually Strong. They Have High Tensile Strength.
Show Notes
17. To Separate a Mixture of Alcohol and Water
Show Notes
18. Chemical Formula for daily use material
Show Notes
19. To Study the Properties of a Colloid
Show Notes
20. 3. Metals are Good Conductors of Heat and Electricity.
Show Notes
25. To Study the Properties of a Compound of Iron and Sulphur
Show Notes
30. 4. Metals are Lustrous (or Shiny), and can be Polished.
Show Notes
33. To Study the Properties of a Solution
Show Notes
34. To Separate the Salt-Water Mixture (or Salt-Solution)
Show Notes
37. 7. Metals are Solids at the Room Temperature
Show Notes
39. To Study the Properties of a Suspension
Show Notes
41. 8. Non-Metals Have Comparatively Low Melting Points and Boiling Points
Show Notes
44. Separation of Mixture Of Two Solids
Show Notes
45. Separation Of Mixture Of a Solid And a Liquids
Show Notes
48. Experiment to Obtain Coloured Component (Dye) From Ink
Show Notes
