States of Matter and Separation
Solids, liquids, gases and how to separate mixtures. Unhurried, with explanations throughout.
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How do the particles in a solid move?
- They do not move at all
- They move freely in all directions
- They vibrate about fixed positions
- They slide past each other
How are the particles in a gas arranged?
- In a fixed lattice
- Closely packed in rows
- Close together but able to slide
- Far apart, moving quickly and randomly
The change from a solid directly to a gas is called:
- Melting
- Evaporation
- Condensation
- Sublimation
Which of these substances sublimes when heated?
- Iodine
- Common salt
- Sugar
- Sand
The change from a gas to a liquid is called:
- Sublimation
- Condensation
- Freezing
- Evaporation
Which method separates sand from water?
- Evaporation
- Filtration
- Distillation
- Chromatography
How would you get salt from salt solution?
- Evaporation
- Filtration
- Decantation
- Using a magnet
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