Sorting Materials into Groups
Q.1. What are the parameters on which things differ from each other?
Q.2. What is sorting?
Q.3. Name seven objects and the materials they are made up of.
Q.4. Name some materials.
Q.5. What helps us to group different materials into different classes?
Q.6. Which two properties are common to all materials?
Q.7. Which material is used to make a bucket?
Q.8. What is classification?
Q.9. Name some properties of materials which help us to classify things.
Q.10. What is lustre?
Q.11. Name five metals having lustre?
Q.12. How to know whether a material is lustrous or not?
Q.13. Name some soft materials.
Q.14. Name some hard materials.
Q.15. Name some smooth materials.
Q.16. Which materials are said to be soluble?
Q.17. What is solubility?
Q.18. Is sand soluble in water?
Q.19. What are miscible liquids?
Q.20. Give an example of immiscible liquids.
Q.21. Name two gases which dissolve in water.
Q.22. Name a gas which does not dissolve in water.
Q.23. What is density?
Q.24. Which substances float and which sinks in water?
Q.25. What is transparency?
Q.26. In how many categories can materials be divided on the basis of transparency?
Q.27. Which materials are called transparent? Give examples.
Q.28. What are Opaque objects? Give examples.
Q.29. What are translucent objects? Give examples.
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