Phases
Changes
Examples
Diagrams
Gases
100
1. This phase of matter has a definite shape and volume and VIBRATES only
Solid
100
What is matter?
anything that has mass and takes up space
100
What is the main reason that hot water evaporates faster than room temp water?
Molecules are moving at a faster rate and spread out more
100
solid
100
What happens to the volume of gas as it gets warmed up?
it increases
200
2. The particles in this phase of matter move around one another, but do not have enough energy to completely separate from one another.
Liquid
200
7. This sequence of phase changes occur when water boils on a stove and there are water droplets forming on the top of the lid.(What two phases)
What is evaporation and then condensation?
200
Snowflakes are seen melting as they fall through the air. This meeting occurs because of the snowflakes.
1. lose heat and the surrounding air loses heat
2. Lose heat and the surrounding air gains heat
3. Gain heat and the surrounding air gains heat
4. Gain heat and the surrounding air loses heat
4.
200
gas
200
All matter is made up of
1. cells
2. molecules
3. compounds
4. atoms
4. atoms
300
3. Particles in this phase of matter take the shape of the ENTIRE volume of the container it is in.
Gas
300
Which process occurs when dry ice changes into a gas WITHOUT going through the liquid phase?
Sublimation
300
Why does food coloring spread out slower in cold water than in hot water?
Molecules move slower in cold water taking it longer for the dye to disperse.
300
liquid
300
Rank the following in order from greatest energy to least.
Liquid
Solid
Gas
Gas - Liquid- Solid
400
Explain how a thermometer works (Hot and COLD)- use the words molecules in your explanation
When a thermometer is placed in a hot liquid or substance the molecules in the thermometer liquid start to move faster and spread out this allows for the liquid in the thermometer to spread out and read a higher temp. When placed in a cold substance the molecules in the thermometer liquid start to slow down and condense making the thermometer read at a lower temp.
400
A pan of uncovered water at 25 celsius is slowly evaporating. Which of these actions would cause the water to evaporate more quickly?
Heat the water in the pan
400
EXPLAIN why the balloon INFLATED when placed in a beaker of hot water.
The balloon inflated because the air molecules started to become hotter meaning they started to move faster and spread out. They ended up spreading out so much that the balloon started to inflate.
400
plasma
400
This process occurs when water vapor changes into frost without going through the liquid phase.
Deposition
500
DAILY DOUBLE!! Explain what happens during condensation on a cold glass of water- be specific and talk about what is happening to the molecules and bonds.
When the warm air comes in contact with the cold glass the molecules start to slow down and condense. This allows for the bonds to start reforming turning the gas back into a liquid.
500
Explain why temperature does NOT change during a phase change.
Temperature does not change during a phase change because all the heat energy goes towards making or breaking the bonds NOT increasing or decreasing molecule speed.
500
Solids tend to be the most dense phase of matter except for this everyday liquid where the liquid phase is more dense than the solid phase. EXPLAIN WHY water floats and why this is important to our everyday world?
When water freezes it becomes less dense. This is because of the charges of the molecules. When they start to solidify they are farther apart. This in makes it less dense. This is why ice floats on water. If ice was more dense the entire planet could potentially be covered in ice.
500
a liquid is boiling into a gas
500
Explain what temperature is a measure of.
Temperature is a measure of how fast or slow the molecules are moving.