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Differentiate between an element and a c...

Differentiate between an element and a compound. Categorise the following substances into elements and compounds.
Sodium chloride, iodine, water, 24 carat gold, oxygen gas, carbon.

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For distinction between element and compound.
Elements : Iodine, 24 carat gold, carbon.
Compounds : Sodium chloride, water, oxygen gas.
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DINESH PUBLICATION-IS MATTER AROUND US PURE-Short Answer Questions
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  6. Explain why , air is considered a mixture and not a compound.

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  9. What is 'Tyndall effect' ? Name two mixtures which show this effect.

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  10. Give two differences between pure substances and mixture. Give one exa...

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  11. What is the difference between (i) Pure substance and mixture (ii) Col...

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  13. Does freezing of water to ice represent a physical change ?

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  14. Discuss the role of centrifugation in removing the precipitate formed ...

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  17. Is the mass percent of a solution same as its strength ? Justify your ...

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