Properties of Materials Have you ever wondered why a tumbler is not made with a piece of cloth? Recall our experiments with pieces of cloth in Chapter 3 and also keep in mind that we gene
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Hardness When you press different materials with your hands, some of them may be hard to compress while others can be easily compressed. Take a metal key and try to scratch with it, the surface of
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Soluble or Insoluble? Activity 4 Collect samples of some solid substances such as sugar, salt, chalk powder, sand, and sawdust. Take five glasses or beakers. Fill each one of them about two-thir
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Soluble or Insoluble? Activity 4 Collect samples of some solid substances such as sugar, salt, chalk powder, sand, and sawdust. Take five glasses or beakers. Fill each one of them about two-thir
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Soluble or Insoluble? Activity 4 Collect samples of some solid substances such as sugar, salt, chalk powder, sand, and sawdust. Take five glasses or beakers. Fill each one of them about two-thir
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Objects may float or sink in water While doing Activity 4, you might have noticed that the insoluble solids separated out from water. You may have also noticed this with some liquids in Activity 5.
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Transparency You might have played the game of hide and seek. Think of some places where you would like to hide so that you are not seen by others. Why did you choose those places? Would you have t
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