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प्रश्न
Differentiate between the terms –
elements, compounds & mixtures.
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उत्तर
Element is a pure substance.
1. It is the basic unit of matter and cannot be broken down into two or simpler substances by any means.
2. It is mainly classified into metals, non-metals, metalloids, and noble gases.
The compound is a pure substance.
1. It is formed by a combination of two or more elements.
2. The elements are combined together in a fixed ratio.
3. It can be broken down into its elements by chemical means.
The mixture is an impure substance.
1. It is formed by the combination of two or more elements, compounds, or both.
2. The substances are mechanically mixed together in any ratio.
संबंधित प्रश्न
Define mixture.
Differentiate between the following.
Filter Paper and Alum
Give one example for the following types of mixtures:
liquid-gas homogenous mixture
Differentiate between:
Homogenous and heterogenous substances
Name: a Liquid Metal
Classify substances into pure and impure substances in the form of a chart or tabulation.
Select the correct answer to the statement given below:
The chemical name for dinitrogen oxide [N20].
Why are utensils made up of aluminium and brass?
Oxygen is very essential for us to live. It forms 21% of air by volume. Is it an element or compound?
Complete the table by writing the symbols of the following elements
| Element | Symbol |
| Aluminum | Al |
| Nickel | |
| Bromine | |
| Helium | |
| Magnesium |
