Show:
Solids, Liquids, and Gases
Particles and States of Matter
Melting and Freezing
Vaporizing and Condensing
Expansion or Contraction
100
state of matter
What is the physical form that matter takes?
100
a fluid
What is any substance whose particles can flow freely called?
100
a change of state
What is a physical change?
100
a liquid changing to a gas (e.g. a boiling pot of water)
What is vaporization?
100
does not involve a change in state
What is thermal expansion?
200
a liquid
What is the form of matter that will change shape to match the shape of its container?
200
liquids
What state do water particles slip past each other and move about called?
200
melting
What is changing from a solid to a liquid?
200
slow or gradual vaporization (e.g. a puddle in the hot sun?)
What is evaporation?
200
the cooling of a solid with the particles vibrating more slowly decreasing in size
What is contraction?
300
a solid
What is a form of matter that has definite shape and volume?
300
a gas
What state are particles spread very far apart, are constantly moving, and bouncing off one another called?
300
process of removing energy from a liquid
What is freezing?
300
when enough energy is removed from a gas it can change to a liquid (e.g. think Making It Rain experiment)
What is condensation?
300
the process of a lake freezing due to loss of heat energy
What is contraction?
400
a gas
What is the form of matter that has no definite shape or volume?
400
a solid
What state are particles held together very closely vibrating in place called?
400
the process of snow and ice changing from a solid to a liquid state
What is melting?
400
adding energy to a solid that changes directly to a gas (e.g. dry ice)
What is sublimation?
400
the process of a lake melting due to increased energy
What is thermal expansion?
500
a liquid
What is a form of matter that has definite volume but no definite shape?
500
the properties of a substance's particles
What determines a subtance's state?
500
the melting and freezing point of water
What is 0 degrees Celsius or 32 degrees fahrenheit?
500
the change of state from a gas to a solid (e.g. frost depositing on a freezing cold window)
What is deposition?
500
the adding and removing of this can cause a change from one state to another
What is energy?