Matter States and Changes
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Matter States and Changes
Model the particles
Particle descriptions for Questions 1–3: In a solid, particles are closely packed and vibrate in fixed positions. In a liquid, particles are close together and can move past one another. In a gas, particles are far apart and move freely in all directions.
- Anything that has mass and occupies space
- Anything that can be seen
- Only substances that are solid
- Anything that contains heat
- Solid
- Liquid
- Gas
- Particles move equally freely in all three states
Follow the energy
Changes of state happen when energy is transferred. A change of state is a physical change: the substance itself remains the same.
- Melting
- Freezing
- Evaporation
- Condensation
- Liquid changes into gas at its surface
- Solid changes into liquid
- Gas changes into liquid
- Liquid changes into solid
3 printable pages
Page 1
Page 2
Page 3
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