Question

The fourth state of matter is a

• A. Liquid
• B. Solid
• C. Plasma
• D. Gas

Answer 1

The correct option is C

Plasma

The correct option is C.

Explanation of correct option:

Option C

1. Plasma is one of matter's four fundamental states.
2. It contains a large number of charged particles, such as ions and/or electrons.
3. Plasma is distinguished from the other fundamental states of matter by the existence of charged particles.

Explanation of incorrect options:

Option A

1. The Liquid state is one of the fundamental states of matter.
2. The molecules in a liquid are closely packed due to weak intermolecular forces.

Option B

1. The solid-state is one of the fundamental states of matter.
2. The molecules of solids are tightly packed because of strong intermolecular forces; they only oscillate about their mean positions.

Option D

1. Gas is one of the fundamental states of matter.
2. The intermolecular forces experienced between them are negligible.

Final answer: Plasma is the fourth fundamental state of matter.