Metals and non metals Worksheet-2

Metals and non metals Worksheet-2

 

Fill in the blanks:

  1. Magnesium reacts with steam evolving ________ gas.

  2. Only those metals displace hydrogen from water/steam which are ________ hydrogen in the reactivity series.

  3. Those metals which are below hydrogen in the reactivity series do not _______ hydrogen from water or steam.

  4. Non-metals ______ with water releasing Hydrogen gas.

  5. Non-metals form ______ hydrides.  (Covalent/Ionic)

  6. If non-metals like carbon,sulphur or phosphorus are put in test tube containing dilute sulphuric acid _____ gas is evolved.

  7. Oxides like Na2O, CaO turn ____ litmus solution ____.

  8. Oxides like P2O5, NO2 turn _____ litmus solution ____.

  9. Nitrogen monoxide is a _____ oxide.

  10. N2O (Dinitrogen monoxide) is a _____ oxide.

  11. MgCl2 (Magnesium chloride)   ____ electricity.

  12. Ordinary aluminium strips are not attacked by water because of the presence of a layer of ______ on its surface.

  13. Zinc displaces copper from copper sulphate solution because it is _____ reactive than copper .

  14. ______ is used to convert vegetable oils into ghee.

  15. _______ is a non-metal used to preserve food materials.

  16. _______ is a non-metal used as fungicide.

  17. _______ is a non-metal used for making electrodes of electrolytic cells and dry cells.

  18. An element forms an oxide of formula E2O3 which is basic in nature. Element E is a _______. (Metal/Non-metal)

  19. P2O3 is a   _____oxide.

  20. Iron forms ______ and ____ on reacting with steam.

 

Answer key:

  1. Hydrogen

  2. Above

  3. Displace/evolve

  4. Do not react

  5. Covalent

  6. No

  7. Red, Blue.

  8. Blue, Red

  9. Covalent/Neutral

  10. Covalent/ Neutral

  11. Conducts

  12. Oxide/Aluminium oxide

  13. More

  14. Hydrogen.

  15. Nitrogen

  16. Sulphur

  17. Carbon/graphite

  18. Metal

  19. Acidic

  20. Iron oxide, Hydrogen gas