Advertisements
Advertisements
Question
What is a chemical formula? What is the significance of a formula?give an example to illustrate?
Solution
The chemical formula is used to describe the types of atoms and its number in an element or compound.
Significance- Chemical formula is very important when trying to find information about chemical compounds because they tell us about the elements present and the number of atoms in that compound.
Example - Salt - NaCl, ethanol C2H6O because the molecule of ethanol contains two Carbon, 6 Hydrogen and 1 Oxygen atom.
APPEARS IN
RELATED QUESTIONS
Write down the formulae of sodium oxide.
Write the chemical formula of the Calcium oxide.
The atomicities of ozone, sulphur, phosphorus and argon are respectively :
An element X has a valency of 4 whereas another element Y has a valency of 1. What will be the formula of the compound formed between X and Y ?
The formula of the nitride of a metal X is XN, state the formula of :
- its sulphate
- its hydroxide.
Write the formula of the following compound:
Potassium iodide
Write the formula of the following compound:
Sodium carbonate
Write the formula of the following compound:
Sodium iodide
Write the formula of the following compound:
Aluminium hydroxide
Write the formula of the following compound:
Copper [II] oxide
State of the following formula of a compound is incorrect. Incorrectly write the correct formula.
(NH4)3SO4
State of the following formula of a compound is incorrect. Incorrectly write the correct formula.
Mg(SO4)2
State of the following formula of a compound is incorrect. Incorrectly write the correct formula.
NaO
State of the following formula of a compound is incorrect. Incorrectly write the correct formula.
NaClO
State of the following formula of a compound is incorrect. Incorrectly write the correct formula.
BaCl2
Which of the following represents a correct chemical formula? Name it.
BiPO4
There is ______ oxygen atom is water molecule.
Write the steps that are followed to write down the chemical formula of a substance.
