Advertisements
Advertisements
प्रश्न
Differentiate between the terms –
elements, compounds & mixtures.
Advertisements
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
What are the different types of mixtures ?
State four differences between compounds and mixtures.
State the number of atoms of CaCO3
Fill in the blank
A diatomic gaseous element is _______.
The important physical properties of substances are colour, odour, nature, density & solubility in water.
Name – a gas with a pungent, choking odour which is lighter than air
Complete the statement given below by filling in the blank with the correct word.
An element is a pure substance which cannot be broken down by physical or _________ methods.
Select the correct answer to the statement given below:
A non-metal which exists in the liquid state.
State five different characteristics of compounds.
Give a reason for the following statement :
The filter paper made into a cone & placed in a funnel for filtering out the solid particles in a solid-liquid mixture should be moistened before placing it.
Match the following.
| Atom | Building block of matter |
| Element | Atoms of different kinds |
| Compound | Atoms of the same kind |
| Molecule | Smallest unit of a substance |
