Matter is composed of atoms, atoms come together to form molecules, and different states of matter result from dissimilarities in how those atoms and molecules interact.
The threemost common states of matter on Earth are solids, liquids, and gases. In a solid, molecules are packed tightly, held in place by adjacent molecules like bricks in a wall.
In a liquid, molecules are free to move about and are constantly jostling one another.
You can picture molecules in a liquid as people in a crowded subway station.
The people (molecules) in the crowd are free to flow, but the individuals that make up the crowd are limited in their movement by the people (other molecules) around them.
The molecules in a gas, on the other hand, go their own way, traveling relatively long distances without interacting with other molecules.
When you think of a gas, picture a swarm of tiny atoms or molecules flying about, each with its own speed and direction.
Matter is composed of atoms, atoms come together to form molecules, and different states of matter result from dissimilarities in how those atoms and molecules interact. The threemost common states of matter on Earth are solids, liquids, and gases. In a solid, molecules are packed tightly, held in place by adjacent molecules like bricks in a wall. In a liquid, molecules are free to move about and are constantly jostling one another. You can picture molecules in a liquid as people in a crowded subway station. The people (molecules) in the crowd are free to flow, but the individuals that make up the crowd are limited in their movement by the people (other molecules) around them. The molecules in a gas, on the other hand, go their own way, traveling relatively long distances without interacting with other molecules. When you think of a gas, picture a swarm of tiny atoms or molecules flying about, each with its own speed and direction.
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