States of Matter
Phase Changes
Heating Curves
Water
Surprise me!
100
Which state of matter is being represented in this picture?
Solid
100
The change in which a solid changes directly into a gas is called _________.
Sublimation
100
What state of matter exists at point A?
Solid
100
At what temperature does water boil?
100 celsius
100
What is kinetic energy?
Energy of motion
200
Which state of matter is being represented in this picture?
Liquid
200
The change in which a gas changes directly into a solid is called _________.
Deposition
200
If we move FROM Point A TO point C, what phase change occurs at point B?
Melting
200
At what temperature does water melt?
0 celsius
200
What is temperature?
The measure of the average kinetic energy of atoms
300
Which state of matter has an indefinite shape and an indefinite volume?
Gas
300
List the 3 phase changes that occur when energy is ADDED
Melting, Boiling/Vaporization, Sublimation
300
If we move FROM Point E TO Point C, what phase change is occurring at Point D?
Condensation
300
At what temperature does water freeze?
0 celsius
300
What parts of the line graph represent a "state of matter"?
The inclines
400
Which state of matter has the highest kinetic energy?
Gas
400
List the 3 phase changes that occur when energy is REMOVED
Freezing, Condensation, Deposition
400
What parts of the line graph represent a "phase change"?
The plateaus
400
At what temperature does water condense?
100 celsius
400
What are intermolecular forces?
They are the forces that are responsible for keeping particles close together
500
Which state of matter has the strongest intermolecular forces?
Solids
500
What happens to temperature during a phase change? EXPLAIN!!
Temperature stays constant (does not change) during a phase change BECAUSE the energy is being used to separate the particles or bring them together.
500
What two phase changes are technically not shown on the heating curve?
Sublimation and Deposition
500
Does water melt at the same or different temperatures? EXPLAIN!
They happen at the SAME temperature. Melting occurs when energy is ADDED at that temperature and freezing occurs when energy is REMOVED at that temperature
500
What is the difference between vaporization and evaporation?
Vaporization requires heat/energy and happens at the bottom
Evaporation does NOT require heat/energy and happens at the surface