What are compounds? Give two examples.

टीपा लिहा

A compound is a pure substance that is formed when the atoms of two or more elements combine chemically in definite proportions.
Example : H₂O, NaCl,

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पाठ 3: Matter Around Us - Evaluation [पृष्ठ ३९]

पाठ 3 Matter Around Us
Evaluation | Q V. 11. | पृष्ठ ३९

What is the difference between a pure substance and a mixture ?

What are the different types of mixtures ?

State four important characteristics of compounds

What is the proportion of element present in the following compound?
H₂O

What is the proportion of element present in the following compound?
NO₂

Name two compounds which dissolve in water.

Give the example of a compound containing carbon and oxygen.

Explain the term mixture.

State whether true or false. If false, correct the statement.

Aspirin is composed of 60% Carbon, 4.5% Hydrogen and 35.5% Oxygen by mass. Aspirin is a mixture.

Classify the following as element and compound,