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प्रश्न
Does the solubility of a substance change with temperature? Explain with the help of an example.
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उत्तर
Yes, the solubility of a substance changes with temperature. It generally increases with temperature. More sugar can be dissolved in hot water as compared to cold water.
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संबंधित प्रश्न
TRUE \ FALSE
Elements combine in definite proportions to form compounds.
WRITE SHORT ANSWER
Define an ionic compound.
Define:- Atom
Define: Chemical bond
Define: Relative atomic mass
What are orbits or shells ?
Define: Covalent bond
A certain particle ‘X’ has 17 protons, 18 electrons and 20 neutrons.
What is the charge on the particle ?
Fill in the blank
A charged particle is called an _____
Name the unit in which the radius of an atom is usually expressed.
Write the relation between nanometre and metre.
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Which element will lose electron?
Draw the basic structure of an atom representing its –
- Subatomic particles
- Nucleus
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State true or false. If false, correct the statement.
The basic unit of an element is molecule.
Name the sub-atomic particles.
Draw the structure of an atom and explain the position of the sub-atomic particles.
Define the following term with an example.
Metal
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- Rutherford’s atomic model
- Thomson’s atomic model
- Bohr’s atomic model
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