Molecules
Phase Change
Thermal Expansion
Heat Movement
Energy Review
100
True or false: Molecules are always moving.
What is True.
100
Liquid to a gas.
What is evaporation.
100
These are the two steps that occur in the molecules of all matter when heat is added.
What is moving faster and spreading out.
100
This the direction heat always moves.
What is more heat to less heat.
100
This changes or potentially changes matter.
What is energy.
200
This is two or more different elements bonded together.
What is a compound.
200
Solid to a liquid.
What is melting.
200
These are the two steps that occur in the molecules of all matter when heat is taken away.
What is slowing down and getting closer together.
200
True or false: There is cold energy.
What is false.
200
This is the energy of motion.
What is kinetic energy.
300
This is two or more elements bonded together.
What is a molecule.
300
These are the two phase changes that happen when heat is ADDED.
What is melting and evaporating.
300
These are the THREE steps that occur to a bridge's molecules sitting out in the hot summer sun for several hours.
What is the molecules speeding up, spreading out, and the bridge expanding.
300
Explain what would happen when 50 degree cheese is put on 100 degree bread. What gains energy and what loses energy? What gets warmer and what gets colder? What gains kinetic energy and what loses kinetic energy? Which one will have its molecules move slower and get closer and which will have its molecules move faster and spread out?
What is the cheese will gain energy, gain kinetic energy, warm up, and will have its molecules move faster and spread out. The bread will lose energy, lose kinetic energy, cool down, and have its molecules slow down and get closer together.
300
This is stored energy.
What is potential energy.
400
Abbreviate this molecule: four Carbons, two Oxygen, and Three Hydrogen.
What is ______.
400
This is the phase change that happens when heat is TAKEN AWAY.
What is freezing and condensing.
400
These are the THREE steps that occur in a hot metal hammer's molecules when it's dunked in ice water and left there.
What is the molecules slow down, move closer together, and the whole hammer contracts.
400
This happens to two substances (that are touching) of different temperatures when they are left alone for a while.
What is their temperatures will eventually become equal.
400
Which is NOT energy: Sound, Light, Gas, Heat
What is Gas.
500
This is the phase of matter where molecules are vibrating very little, have strong attractions to one another, and are packed very tightly together.
What is a solid.
500
Put the three phases of matter (liquid, gas, solid) in order from most kinetic energy to least kinetic energy.
What is Gas, Liquid, Solid.
500
DAILY DOUBLE!!!! Name the only substance we know of that actually EXPANDS when it cools down and becomes a solid.
What is water.
500
20 degree ice is left in a cooler with 80 degree cans of soda. After an hour, the ice and soda are both 50 degrees. The ice has melted, but the soda is colder. If someone wanted to cool the ice and soda down more, what should be put in the cooler and WHY? More 80 degree cans of soda, more 20 degree ice, or cans of soda that are also 50 degrees?
What is more 20 degree ice. The ice will take the heat away from the soda and cool it down further.
500
Fill in the blanks: Energy cannot be ________________ or _________________. It can only change forms.
What is created / destroyed.
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