Key Points
Matter can exist in one of three main states: solid, liquid, or gas.
Solid matter is composed of tightly packed particles. A solid will retain its shape; the particles are not free to move around.
The liquid matter is made of more loosely packed particles. It will take the shape of its container. Particles can move about within a liquid, but they are packed densely enough that volume is maintained.
The gaseous matter is composed of particles packed so loosely that it has neither a defined shape nor a defined volume. A gas can be compressed.
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The states of matter—solids, liquids, and gases—have distinct properties such as shape and volume . Solids have a definite shape and volume; liquids have an indefinite shape but definite volume; gases have both indefinite shape and volume. These properties can be illustrated through a Venn diagram. ;
The states of matter—solids, liquids, and gases—have specific characteristics including shape and volume. Solids have a definite shape and volume, liquids have a definite volume but take the shape of their container, and gases have neither definite shape nor volume. A Venn diagram can effectively illustrate the similarities and differences among these states.
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