State the physical properties of diamond.

Explanation

### Step-by-Step Text Solution for the Physical Properties of Diamond

1. **Hardness**: Diamond is known for its exceptional hardness. It is the hardest natural material found on Earth, even harder than glass. This property makes it highly valuable for cutting tools and jewelry.

**Hint**: Think about why diamonds are used in cutting tools.

2. **Low Coefficient of Friction**: Diamond has a low coefficient of friction, which means it is slightly slippery in nature. This property can be advantageous in certain applications where reduced friction is desired.

...