Question

7. What is compound?​

Answer 1

A chemical compound is a material made up of several similar molecules (or molecular entities) that are linked together by chemical bonds and contain atoms from many elements.

As a result, a molecule made up of only one element's atoms is not a compound.

Depending on how the component atoms are kept together, there are four types of compounds:

• Covalent bonding hold molecules together.

• Ionic bonds hold ionic substances together.

• Metallic bonds hold intermetallic compounds together.

• Coordinate covalent bonds hold some complexes together.

Answer 2

Answer:

1. A substance consisting atoms or ions of two or more elements in definite proportions joined by chemical bonds into a molecules.
2. Each elements held together by covalent bond or ionic bond.
3. When elements combine, some individual property of element lost and the newly formed compound has new properties.
4. Compounds are classified into two types : i)  molecular compound  ii)salts.
5. In molecular compund atoms binds through covalent bonds.
6. In salts it held together with ionic bond.
7. Example of molecular compound are water H₂O , Hydrogen Peroxide H₂O₂ .
8. Exampleof salts are table salt (NaCl).

Other compounds and  there molecular formula are as follows :

1. Alcohol  - C₂H₆O
2. Acetic Acid - C₂H₄O₂
3. Sulphuric Acid -H₂SO₄
4. Ammonia   -  NH₃
5. Methane   - CH₄