Question

2 Clarify the following into elements and Compounds:
(a) H2O(b) HE (c) CO​

Answer 1

Answer:

Elements :  ,  and  

Compounds:  and  

Explanation:

Element is a pure substance which is composed of atoms of similar elements.It can not be decomposed into simpler constituents using chemical reactions.Example: helium  , chlorine  , cobalt  

Compound is a pure substance which is made from atoms of different elements combined together in a fixed ratio by mass.It can be decomposed into simpler constituents using chemical reactions. Example: water  , carbon monoxide

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Answer 2

Answer:

I) water ii) is helium and iii) is carbon monoxide