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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
MATCH THE COLUMNAS
| 1. Jpham Dalton | a. Neutrons |
| 2. Atom | b. Model of the atom |
| 3. Chadwick | c.The atomic theory of matter |
| 4. Rutherfrod | d. Positively charged |
| 5. Protons | e. Electricity neutral |
| 6. Nuclear fusion | f. Generator of electricity |
| 7.Gamma -rays | g. High penetrating power |
| h.Energy in sun |
WRITE SHORT ANSWER
What is radioactivity?
Write the names of the elements present in the :-
Sulphuric acid
Write the names of the elements present in the:-
Sodium hydroxide
Fill in the blank:
Atoms are _____
Define: Covalent bond
Give two examples for each of ionic and covalent bond.
Who originated the word ‘atom’ ?
Name the particle or particles you would expect to find in :
The nucleus of an atom
A certain particle ‘X’ has 17 protons, 18 electrons and 20 neutrons.
What is the atomic numebr of X ?
Electron, proton, neutron are the types of ______ in an atom.
The electron shell ______ is nearest to the nucleus.
The electronic structure [configuration] of fluorine can be written as 2, 7. In a similar way give the electronic configuration of phosphorus
An element is composed of ______ atoms.
Atoms of different elements having ______ mass numbers, but ______ atomic numbers are called isobars.
The number of atoms present in a molecule is called its ______.
1 mole of Gold and Silver contain same number of atoms.
What are the 3 most abundant atoms on the earth?
