What is the differnece between a pure substance and a mixture?

Question

Question 6 options:

A mixture has only one type of atom.

A pure substance contains more than one type of atom

A pure substance can be physically seperated while a compound cannot.

A mixture can be physically seperated while a pure substance cannot.

Answer 1

The correct option that highlights the difference between a pure substance and a mixture is:

A mixture can be physically separated while a pure substance cannot.

Explanation:

• A pure substance is made up of only one type of particle and has consistent properties throughout. It cannot be separated into simpler substances by physical means. Examples include elements (like gold) and compounds (like water).
• A mixture consists of two or more substances (elements or compounds) that are physically combined and can be separated by physical means, such as filtration or distillation. Examples include air, salad, and saltwater.