Question

5. Choose from this list of substances and answer the following questions. A
Substance may be used once, more than once or not at all.

Oxygen, Sulphur, methane, sodium, carbon dioxide, salty water, iron, air

a). Name the elements.


b). Name the compounds


c). Name the non-metallic elements.


d). Name a substance which is an element made of molecule with
two atoms.

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e). which substances are mixture.

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Answer 1

Answer:

a) Oxygen, Sulphur, Sodium, Iron

b)methane, Carbon dioxide,

c) Oxygen, Sulphur

d) Oxygen

e) Salt water, Air

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Answer 2

Answer:

1st ans. is sodium,iron

2nd is carbon dioxide,methane, air

3rd is oxygen , sulphur

4th is carbon dioxide

5th is salty water