Explain the following by giving examples.
pure substance

Explanation

### Step-by-Step Solution:

1. **Definition of Pure Substance**:
A pure substance is defined as a material that is made up of only one type of particle. This can be either a single element or a single compound.

2. **Characteristics of Pure Substances**:
- Pure substances have consistent properties throughout, such as melting point, boiling point, and density.
- They cannot be separated into other substances by physical means.
...