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Question
State three characteristics of molecules of matter.
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Solution
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Molecules are very small:
- Molecules are tiny particles that cannot be seen with the naked eye. They make up all matter, such as solids, liquids, and gases.
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Molecules are always moving:
- In solids, molecules vibrate in fixed positions.
- In liquids, they move more freely.
- In gases, they move very fast and spread in all directions.
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Molecules are held together by forces:
- Molecules are held together by attractive forces called intermolecular forces. These forces are strongest in solids, weaker in liquids, and weakest in gases.
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