Particles

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Particles
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Q1. What is the smallest particle of a substance
called?
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A1. Atom
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Q2. What is a group of chemically combined atoms
called?
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A2. Molecule
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Q3. What do you call an empty volume of space?
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A3. Vacuum
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Q4. What is the form of energy due to molecular
motion called?
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A4. Heat
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Q5. What do you call the change of state from
solid to liquid?
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A5. Melting
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Q6. What do you call the change of state from
liquid to gas?
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A6. Boiling
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Q7. What do you call the change of state from gas
to liquid?
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A7. Condensation Condense
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Q8. What do you call the change of state from
liquid to solid?
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A8. Freezing Freeze
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Q9. Why does the water level in a glass near a
warm radiator go down?
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A9. Evaporation Evaporate
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Q10. What do you call the movement of one
substance through another substance?
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A10. Diffusion
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Q11. What is the measure of how hot or cold a
substance called?
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A11. Temperature
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Q12. What is force divided by area called?
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A12. Pressure
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