Which of the following describes the four states of matter?

• A. Solid, Liquid, Gas, and Vapor
• B. Solid, Liquid, Gas, and Plasma
• C. Solid, Liquid, Gas, and Steam
• D. Solid, Liquid, Gas, and Mist

Answer: (B)

The four states of matter are correctly described as solid, liquid, gas, and plasma. Each state has distinct properties based on the arrangement and energy of its particles.

In a solid state, particles are closely packed together in a fixed arrangement, giving it a definite shape and volume. In liquids, the particles are still closely packed but can move past each other, allowing them to take the shape of their container while maintaining a constant volume. Gases have particles that are widely spaced and move freely, resulting in no fixed shape or volume. Plasma, the fourth state, is formed at extremely high temperatures when electrons are stripped from atoms, creating an ionized gas that conducts electricity and responds strongly to magnetic fields.

While the other options include terms like vapor, steam, and mist, these are not distinct states of matter. For example, vapor generally refers to the gas phase of a substance that is normally a liquid at room temperature, while steam is specifically water vapor, and mist refers to tiny droplets of water suspended in air but is not considered a fundamental state of matter. Plasma stands out as its own state due to its unique characteristics and behavior in the presence of an electric or magnetic field, making it the correct completion of the list of fundamental states of