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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
Choose the most appropriate answer
A solvent of Iodine is
Is food that we eat a mixture ?
Name the technique that you use if only the solid component of a solution is required.
Define:
Atomicity
Fill in the blank
A liquid non-metal is _______.
Tick (√) the correct alternative from the choice given for the following statement.
Brass and bronze are
Draw a labelled diagram of an atom including its nucleus, orbits & their contents.
Give a reason for the following statement:
Components in a mixture are present in varying proportions and not in a fixed proportion.
Give an example for the elements derived from their Latin names.
Complete the table by writing the symbols of the following elements
| Element | Symbol |
| Aluminum | Al |
| Nickel | |
| Bromine | |
| Helium | |
| Magnesium |
