ICSE Class 8 Answered
differentitate
1) symbols and formulae
2)cations and anions
Asked by nathsantanukumar | 09 May, 2018, 07:10: PM
Expert Answer
1) Difference between symbol and formula:
| Symbol | Formula |
|
1. A symbol represents a short form of
an element.
|
1. It represents one molecule of a
compound.
|
| 2. A symbol represents one atom of the element. |
2. It gives information about
the number of each kind of atoms present, i.e.
the ratio in which the atoms are present in each molecule.
|
| 3. It indicates the atomic weight of an element |
3. If the mass of each atom in the molecule is known,
then the mass of one molecule of the compound
can be calculated
|
2) Cations and anions:
| Cations | Anions |
| 1. These have a positive charge and are also called cations | 1. These have a negative charge and are also called anions |
| 2. Example: All metallic ions and ammonium ion (NH4+) |
2.Example: Most of all non-metallic ions and groups of
non-metallic atoms with a negative charge
|
Answered by Ramandeep | 10 May, 2018, 10:40: AM
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