Question

explainTypes of matter (on the basis of chemical
composition)​

Answer 1

Ans :

Matter can also be classified by its chemical composition.

An element is a pure substance made up of atoms with the same number of protons. As of 2011, 118 elements have been observed, 92 of which occur naturally. Carbon (C), Oxygen (O), Hydrogen (H) are examples of elements. The periodic table is a tabular representation of the known elements.

A compound consists of two or more chemical elements that are chemically bonded together. Water (H2O) and table sugar (C12H22O11) are examples of chemical compounds. The ratio of the elements in a compound is always the same. For example in water, the number of H atoms is always twice the number of O atoms.

A mixture consists of two or more substances (element or compound) mixed together without any chemical bond. Salad is a good example. A mixture can be separated into its individual components by mechanical means.

Answer 2

TYPES OF MATTER ON THE BASIS OF CHEMICAL COMPOSITION:

1. Pure Substances: Substances which are homogeneous in nature and contain particles of one type are called Pure Substances.

Further it is classified into two types:

• Element
• Compound

2. Mixture

Further classified into two types:

• Homogeneous mixture
• Heterogeneous mixture