in liquid, particles are close to each other and they move around one another.
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10
What happens to the movement of particles when a substance is heated.
The particles move faster and further away from each other.
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10
Which state of matter can be easily compressed?
gas
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5
Name the change in state when a gas turns into a liquid
condensation
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lifesaver
Give 10 points!
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rocket
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rocket
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lifesaver
Give 10 points!
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10
Name the change in state when a solid turns into gas without passing by the liquid phase.
sublimation
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15
What are the three states of matter?
solid, liquid and gas
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15
How strongly do the particles attract in case of solid, liquid and gas?
Very strong attraction in solid, slightly less attraction in liquid and very weak attraction in gas.
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5
What is the melting point of ice?
0 degree Celsius
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10
Which two states of matter have the ability to flow?
liquid and gas.
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5
What is the freezing point of water?
0 degree Celsius
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15
Use the particle theory to explain why the shape of a piece of metal in its solid state doesn't change when you press it hard?
The particles of the solid are closely packed to each other and there is no room between the particles. So, solids don't have the ability to be compressed.
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15
How can we know if a certain solid we have is pure or a mixture of different substances?
if it melts at a specific temperature, it is pure. However, if it melts over a range of temperatures, it is a mixture.
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5
name the change of state when a liquid turns into gas.
