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Define a compounds Give two points of evidence to show that sodium chloride is a compound.

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LAKHMIR SINGH & MANJIT KAUR-IS MATTER AROUND US PURE -Exercise
  1. state three reasons why you think air is a mixture and water ...

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  2. state three reasons why you think air is a mixture and water ...

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  3. Define a compounds Give two points of evidence to show that sodi...

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  4. Define a mixture ,Give two points of evidence to show that su...

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  5. state two reasons for supposing that brass is a mixture and no...

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  6. List five characteristics by which compounds can be distingushed ...

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  7. Explain why ,a solution of salt in water is comsidered a mixture ...

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  8. state one property in which a solution of sugar in water resembl...

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  9. How will you distinguish a colloid from a solution ?

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  10. Name a non- metal: (a) which is lustrous (b) which is requi...

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  11. Name a metal : (a) which can be easily cut with a knife (b) ...

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  12. Which of the following are not compounds? (a) Chlorine gas (b) Pota...

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  13. (a) state the main points of difference between homogenous and ...

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  14. (a) what is meant by (i) element (ii) compounds ,and (iii ) mixt...

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  15. (a) what are (i) metals (ii) non-metals ,and (iii) metallloids ? Giv...

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  16. List the points of differences between homogeneous and heterogenous mi...

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  17. (a) what are the three general classes of matter ? Give one exam...

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  18. Which of the following is not an element ?

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  19. Which of the following are compounds ? (i) Co (ii) No (iii) NO ...

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  20. One of the following substance in neither a good conductor of electri...

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