Question

List the physical and chemical properties of oxygen.

Answer 1

Physical properties of oxygen -

• Nature - Oxygen is a colourless, odourless and tasteless gas.
• Density- It is slightly heavier than air.
• Solubility- It is slightly soluble in water.
• It becomes a liquid below -183$°\mathrm{C}$.
• It becomes a solid at about -218.4$°\mathrm{C}$.

Chemical properties of oxygen-

• The action of litmus - Oxygen is neutral to litmus. This means it does not change the colour of the litmus paper.
• Combustibility - Oxygen supports combustion.
• Reactivity - Oxygen reacts with metals and non-metals to form respective oxides.

Example - Iron reacts with oxygen to form iron oxide.