मराठी

What is a Chemical Formula?What is the Significance of a Formula?Give an Example to Illustrate.​

Advertisements
Advertisements

प्रश्न

What is a chemical formula? What is the significance of a formula?give an example to illustrate?​

टीपा लिहा
Advertisements

उत्तर

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.

shaalaa.com
  या प्रश्नात किंवा उत्तरात काही त्रुटी आहे का?
पाठ 1: The Language of Chemistry - Exercise 1 (A) [पृष्ठ ९]

APPEARS IN

सेलिना Concise Chemistry [English] Class 9 ICSE
पाठ 1 The Language of Chemistry
Exercise 1 (A) | Q 9 | पृष्ठ ९

संबंधित प्रश्‍न

Write the chemical formula of the Magnesium chloride.


Fill the following blanks with suitable words :

In a chemical reaction, the sum of the masses of the reactants and the products remains unchanged. This is called ....................


The atomicities of ozone, sulphur, phosphorus and argon are respectively :


An element A forms an oxide A2O5.

What will be the formula of chloride of A ?


Give the formula and valency of:
aluminium ………………. .


Name the element in the compound and give the formula of the following compound:

Acetic acid


Write the formula of the following compound: 
Potassium chloride

Write the formula of the following compound: 
Potassium bisulphate

Write the formula of the following compound:

Potassium aluminate


Write the formula of the following compound:

Sodium nitrite


Write the formula of the following compound:

Calcium hydroxide


Write the formula of the following compound:

Magnesium chloride


Write the formula of the following compound:

Zinc nitrate


Write the formula of the following compound:

Lead [II] hydroxide


Write the formula of the following compound:

Lead [II] sulphate


Write the formula of the following compound:

Silver [II] chloride


State of the following formula of a compound is incorrect. Incorrectly write the correct formula.

KCr2O7


State of the following formula of a compound is incorrect. Incorrectly write the correct formula.

KNO3


Find the valency of the element which is underlined in the following formula.

  1. NaCl
  2. CO2
  3. Al (PO4)
  4. Ba (NO3)2
  5. CaCl2

Write the molecular formulae for the following compounds

Calcium (II) phosphate


Share
Notifications

Englishहिंदीमराठी


      Forgot password?
Use app×