[CHEMISTRY]

METALS AND NON METALS

Answer the following questions:-

1. Name some common non-metals used in our daily life.

2. Hardest naturally occurring substance.

3. Property of metals which make them useful as electric wires.

4. Non – metal which has metallic luster.

5. Two non metals which are soft solids.

6. Non metals do not conduct electricity or heat except for one . Name it.

7. Metals that are not attacked by cold water, boiling water or stream.

8. The property of metals by virtue of which these can beaten into sheets.

9.Non metal used in disinfection of drinking water.

II. Answer the following( in one or two words)

1. What are the elements called which can neither fit with metals nor non metals?

2. Which of the following metals is the best conductor of heat and electricity? Gold, Silver, Copper, Aluminum

3. Which property of metals makes them useful as ringing bells?

4. Arrange the following elements in order of increasing reactivity. Sodium, Magnesium, Copper, Zinc, Aluminum

5. Which non-metal is used in making pencil lead?

6 Identify the most reactive and least reactive metal amongst the following Aluminum, Potassium, Copper, zinc, Gold

7 State the nature of oxides of non-metals.

8 Give an example of neutral oxide .

9.Which non metal is kept under water and why?