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Describe how, crystals of copper sulphat...

Describe how, crystals of copper sulphate are prepared.

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**Step-by-Step Solution for Preparing Crystals of Copper Sulphate:** 1. **Gather Materials:** - Start by gathering the necessary materials: a beaker, a cup of water, dilute sulfuric acid, copper sulfate powder, and a stirring spoon. 2. **Add Water to Beaker:** - Pour one cup of water into the beaker. This will serve as the solvent for dissolving the copper sulfate. ...
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LAKHMIR SINGH & MANJIT KAUR-PHYSICAL AND CHEMICAL CHANGES-EXERCISE
  1. Explain why, melting of ice to form water is said to be a physical cha...

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  2. What is meant by crystallisation ? State its one use.

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  3. Describe how, crystals of copper sulphate are prepared.

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  4. Give example of a chemical change which occurs by the action of heat.

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  5. Give example of a physical change which occurs by the action of heat.

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  6. What is a (a) physical change, and (b) chemical change ? Give two exam...

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  7. What is meant by the rusting of iron ? State two conditions necessary ...

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  8. What happens when an iron nail is kept immersed in copper sulphate sol...

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  9. What happens when baking soda is added to vinegar ? Write a word equat...

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  10. What happens when carbon dioxide gas is passed through lime water ? Wr...

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  11. When baking soda is mixed with lemon juice, bubbles are formed with th...

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  12. When a candle burns, both physical and chemical changes take place. Id...

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  13. Explain why, burning of wood and cutting of wood into small pieces are...

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  14. What happens when magnesium ribbon is burned in air ? Write a word equ...

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  15. What happens when magnesium oxide is dissolved in water ? Write a word...

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  16. Which one of the following is not a chemical change ?

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  17. Which of the following are physical changes? (i) Melting of iron met...

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  18. Which of the following are chemical changes? (i) Decaying of wood ...

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  19. Which one of the following change can be reversed ?

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  20. Which of the following is not a physical change ?

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