Q1 of 59 Page 99

Write the differences between elements and compounds and give an example for each.

Oxygen is very essential for us to live. It forms 21% of air by volume. Is it an element or compound?

You have just won a medal made of 22-carat gold. Have you just procured a pure substance or impure substance?

Explain Tyndall effect and Brownian movement with suitable diagram.

How are homogenous solutions different from heterogeneous solution? Explain with examples.

Questions · 59

4. Matter around us

1 2 3 4 5 1 1 1 2 3 4 5 1 2 3 4 5 1 2 3 4 5 1 2 3 1 1 1 2 1 2 3 4 5 1 2 3 4 5 1 1 2 3 4 5 1 2 3 4 1 2 3 4 5 1 1 1 1 2