Question

Classify the following into elements, compounds, and mixtures.

Charcoal, coconut oil, kerosene, milk, carbon dioxide, iron, nitrogen gas, sulphur, ammonia, sweets, glucose, coal gas, alcohol

Answer 1

Elements - An element is a substance that is made up of only one kind of atom, and cannot be split using any chemical means. For example - Gold$\left(\mathrm{Au}\right)$, Silver$\left(\mathrm{Ag}\right)$, etc.

Compounds - A compound is a substance made up of two or more elements united chemically in a predetermined mass proportion. For example - Water$\left({\mathrm{H}}_2\mathrm{O}\right)$, Carbon dioxide$\left({\mathrm{CO}}_2\right)$, etc.

Mixtures - A mixture is formed when atoms or molecules of the same or different particles combine with each other physically. For example - Air is a mixture of gases like Carbon dioxide, Nitrogen, Oxygen, etc; dust, Water vapors

Elements	Compounds	Mixtures
Charcoal, iron, sulphur	coconut oil, kerosene, carbon dioxide, nitrogen gas, ammonia, glucose, alcohol	milk, sweets, coal gas