Metals and non metals Worksheet-3

Metals and non metals Worksheet-3

 

Fill in the blanks:

  1. Metals react with non-metals forming ______ compounds.

  2. Non-metals react with non-metals forming ____ compounds.

  3. Ionic bonds are formed by _____ of electrons.

  4. Covalent bonds are formed by ______ of electrons.

  5. _____ compounds have high melting and boiling point.

  6. _______ compounds are soluble in water but insoluble in organic solvent.

  7. ____ compounds are crystalline solids.

  8. Naphthelene is taken in a spatula and heated, it is observed that it melts easily. Napthelene is a _____ compound.

  9. ____ compounds are volatile.

  10. NaCl(aq) _____ electricity where as PCl5(aq) _____ electricity.

  11. Carbon disulphide (CS2) is a _____compound.

  12. Na2S (Sodium sulphide) solution _____ electricity.

  13. Ionic compounds have high melting points due to _____ between the ions.

  14. Those minerals from which metals can be easily extracted are called _____.

  15. The reduction of a metal oxide to form metal by using Aluminium powder as reducing agent is called _____

  16. During electrolytic refining of metals cathode is made of _______.

  17. During electrolytic refining of metals anode is made of _______.

  18. Zinc carbonate is converted to Zinc oxide by ______.

 

Answer key:

  1. Ionic

  2. Covalent

  3. Transfer

  4. Sharing

  5. Ionic

  6. Ionic

  7. Ionic

  8. Covalent

  9. Covalent.

  10. Conduct, does not conduct.

  11. Covalent

  12. Conducts

  13. Strong force of attraction/ ionic bond

  14. Ores

  15. Thermite reduction.

  16. Thin strip of pure metal.

  17. Impure metal rod

  18. Calcination