C. Match the statements in Column A, with those in Column B.
Column 1 Column 2
1. The symbolic representation of a molecule of a chemical compound.
(a) Atom
2. The symbolic representation of a molecule of ozone.
(b) CuS
3. The symbolic representation of a molecule of nitric acid.
(c) O3
4. The symbolic representation of a molecule of copper sulphide.
(d) HNO3
5. The smallest particle of an element which may or may not exist independently, but always takes part in a chemical reaction.
(e) Formula
C. Match the statements in Column A, with those in Column B.
| Column 1 | Column 2 |
|---|---|
1. The symbolic representation of a molecule of a chemical compound. |
(a) Atom |
2. The symbolic representation of a molecule of ozone. |
(b) CuS |
3. The symbolic representation of a molecule of nitric acid. |
(c) O3 |
4. The symbolic representation of a molecule of copper sulphide. |
(d) HNO3 |
5. The smallest particle of an element which may or may not exist independently, but always takes part in a chemical reaction. |
(e) Formula |
1. The symbolic representation of a molecule of a chemical compound. - (e) Formula
A symbolic representation of one molecule of a compound representing the number of atoms of various elements present in it, is called the formula of the compound.
2. The symbolic representation of a molecule of ozone. - (c) O3
The symbolic representation or the formula of ozone is O3. It shows that, ozone have 3 atoms of oxygen present.
3. The symbolic representation of a molecule of nitric acid. - (d) HNO3
The symbolic representation or the formula of ozone is HNO3. It shows that, nitric acid has one hydrogen atom, one nitrogen atom and three atoms of oxygen.
4. The symbolic representation of a molecule of copper sulphide. - (b) CuS
The symbolic representation of a molecule of copper sulphide is CuS. It shows that, copper sulphide has one atom of copper and one atom of sulphur.
5. The smallest particle of an element which may or may not exist independently, but always takes part in a chemical reaction. - (a) Atom
The smallest particle of an element which may or may not exist independently, but always takes part in a chemical reaction is called an atom.
Column A Column B 1. The symbolic representation of a molecule of a chemical compound. (e) Formula 2. The symbolic representation of a molecule of ozone. (c) O3 3. The symbolic representation of a molecule of nitric acid. (d) HNO3 4. The symbolic representation of a molecule of copper sulphide. (b) CuS 5. The smallest particle of an element which may or may not exist independently, but always takes part in a chemical reaction. (a) Atom
1. The symbolic representation of a molecule of a chemical compound. - (e) Formula
A symbolic representation of one molecule of a compound representing the number of atoms of various elements present in it, is called the formula of the compound.
2. The symbolic representation of a molecule of ozone. - (c) O3
The symbolic representation or the formula of ozone is O3. It shows that, ozone have 3 atoms of oxygen present.
3. The symbolic representation of a molecule of nitric acid. - (d) HNO3
The symbolic representation or the formula of ozone is HNO3. It shows that, nitric acid has one hydrogen atom, one nitrogen atom and three atoms of oxygen.
4. The symbolic representation of a molecule of copper sulphide. - (b) CuS
The symbolic representation of a molecule of copper sulphide is CuS. It shows that, copper sulphide has one atom of copper and one atom of sulphur.
5. The smallest particle of an element which may or may not exist independently, but always takes part in a chemical reaction. - (a) Atom
The smallest particle of an element which may or may not exist independently, but always takes part in a chemical reaction is called an atom.
| Column A | Column B |
| 1. The symbolic representation of a molecule of a chemical compound. | (e) Formula |
| 2. The symbolic representation of a molecule of ozone. | (c) O3 |
| 3. The symbolic representation of a molecule of nitric acid. | (d) HNO3 |
| 4. The symbolic representation of a molecule of copper sulphide. | (b) CuS |
| 5. The smallest particle of an element which may or may not exist independently, but always takes part in a chemical reaction. | (a) Atom |
