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What do you understand by the terms elem...

What do you understand by the terms element, compound and mixture ? Give two examples in each case

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MODERN PUBLICATION-SOME BASIC CONCEPTS OF CHEMISTRY -REVISION EXERCISES (SHORT ANSWER QUESTIONS) (CARRYING 2 OR 3 MARKS)
  1. What do you understand by the terms element, compound and mixture ? Gi...

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  2. Explain the term mole. What does one mole of ammonia represent ?

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  3. Give the SI units for (i) volume (ii) speed and (iii) force.

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  4. What do you understand by the terms (i) empirical formula and (ii) mol...

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  5. Define molarity. What does 1 M solution of sodium carbonate mean ?

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  6. Classify the following into elements, compounds or mixtures : (i) Wa...

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  7. What are homogeneous and heterogeneous mixtures ? Which of the followi...

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  8. When two substances A and B are mixed together in a pestel and mortar,...

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  9. State the following : (i) atomic mass (ii) gram atomic mass (iii) gr...

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  10. How would you recover (i) iodine from a mixture of iodine and salt? ...

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  11. State Avogadro’s hypothesis. In what way, has it given support to Dalt...

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  12. How can you deduce the atomicity of hydrogen with the help of Avogadro...

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  13. State the following laws of chemical combination and give one example ...

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  14. What do you understand by a balanced chemical equation ? What quantita...

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  15. Explain (i) molarity (ii) limiting reagent.

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  16. Write the balanced chemical equations for the following reactions : ...

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  17. Write the empirical formulae of the compounds having the following mol...

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  18. Balance the following equations: (i) H(3)PO(3) to H(3)PO(4) + PH(3) ...

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  19. What do you understand by the term formula mass ? How does it differ f...

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  20. Which of the following has (i) maximum (ii) minimum mass ? (a) 1 gra...

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