States of Matter
States of Matter 2
Changes of State
Changes of State 2
Energy
100
What state of matter has a definite shape and a definite volume?
What is Solid?
100
What are the three states of matter?
Solids, liquids, and gases
100
What is it called when a solid changes to a liquid?
melting
100
What is it called when a liquid changes to a solid?
Freezing
100
When energy is added to a substance, the particles will move (faster/ slower)?
faster
200
A substance that has neither a definite shape nor a definite volume.
Gas
200
In a solid, particles do not move around each other, but they do
Vibrate in place
200
The change in state from a gas to a liquid.
Condensation
200
What is called when a liquid changes to a gas?
Vaporization
200
When a liquid is freezing into a solid, thermal energy is...(added/ taken away)
taken away
300
This state of matter has a definite volume but no definite shape
Liquid
300
What type of solid does not have particles arranged in a regular pattern and does not melt at a specific temperature? Example: butter
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Amorphous solid
300
What is vaporization that only takes place on the surface of the liquid?
evaporation
300
When a substance is cooled, its thermal energy will do what?
Decrease
300
During sublimation (the change from solid to gas) thermal energy is (added/ taken away)
added
400
What state of matter is milk?
Liquid
400
Helium is an example of which state of matter?
Gas
400
What is the change in state when a solid changes directly to a gas?
sublimation
400
What is the temperature at which a substance changes from a liquid to a solid?
freezing point
400
What is temperature? What does it measure?
Temperature is a measure of the average kinetic energy of the particles in an object or substance. It measures how quickly the particles are moving.
500
Sugar is considered a crystalline solid because its particles are
Arranged in a regular pattern
500
What is the property of liquids that causes their surface to behave like a thin, elastic film?
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Surface tension
500
What happens to the temperature of a substance during the phase change (change of state)? (melting, freezing, vaporizing, condensing)
Does it increase? Decrease? Stay the same?
Stays the same
500
What do you notice about the vaporizing point and condensing point on this graph?
Answers may vary:
*Vaporizing (boiling) and condensing points are the same, because they are the temperatures at which change occurs.
*Temperatures remain the same as substances change state.
500
What is the total kinetic and potential energy of all the particles in an object or substance?
thermal energy
