Chemistry › lesson 02 of 100 · Beginner

States of Matter

Matter exists as solids, liquids, or gases.

Imagine you are holding an ice cube in your hand on a warm day. As the ice cube sits in your hand, it starts to melt and turn into a liquid. If you were to heat this liquid further, it would eventually turn into a gas. This is because matter can exist in different states, which are determined by the arrangement of its particles.

In a solid, the particles are closely packed and have a fixed position in space. In a liquid, the particles are close together but are free to move past each other. In a gas, the particles are widely spaced and are free to move in any direction.

Understanding the different states of matter is important in chemistry because it helps us understand how matter behaves under different conditions.

예시

• Watercan exist as a solid (ice), a liquid (water), or a gas (water vapor)
• Oxygenexists as a gas at room temperature
• Ironexists as a solid at room temperature

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