Question

20. Give two examples for each of the following:

(a). Elements

Answer 1

• Element: A pure substance made up of only one kind of atom is called an element. It cannot be broken down into simpler substances through chemical methods.
• Hydrogen$\left(\mathrm{H}\right)$, Carbon$\left(\mathrm{C}\right)$ and Silver$\left(\mathrm{Ag}\right)$ are examples of elements.