Phases of Matter
What are the 3 phases of matter?
Solid, Liquid, Gas
Baking soda and Vinegar is an example of what kind of change?
A Chemical Change
Name 2 ways to change phases
Melting
Freezing
Deposition
Sublimation
Condensation
Evaporation
Glasses fogging up is an example of what phase change?
Condensation or gas to liquid
Where does water go when it evaporates from a liquid?
Into the air
What takes up space and has weight?
Matter
Ripping paper and crushing a can are examples of what kind of change?
A Physical Change
What temperature is boiling and freezing point at?
0 degrees celsius
What is the final stage in sublimation?
Gas
Which two phases of matter take the shape of their container?
Liquid and Gas
What is the less common 4th phase of matter?
Plasma
List 2 characteristics of a chemical change
Any 2 from the list below:
Change in temperature or energy release
Formation of a gas or bubbles
Colour change
Formation of a precipitate or solid
Change in odor or smell
Change in pH (acidity or basicity)
New substances formed
Irreversible change
What happens when a solid meets its melting point?
It will melt and turn into a liquid
What happens to the particles when they go from a gas straight to a solid?
They go very close together and slow down instead of further apart and faster.
Why do dryers use hot air instead of just air?
Hot air will cause evaporation at a faster rate.
List the 3 phases and how each of their particles move (which phases has fast particles, which has slow, and which has movement in between)
Gas = Fast
Liquid = Medium/In between
Solid = slow
List 3 characteristics of a physical change
Any 3 from the list below:
Change in size or shape
Change in state (solid, liquid, or gas)
Change in colour or appearance Change in texture or hardness
Change in density or weight
Change in solubility or transparency
No new substances formed
What is the process of turning liquid into a gas? Give 1 example of this.
Evaporation
Examples could include: Boiling water in a kettle or on the stove, drying your hair or clothes, steam from your shower, a puddle drying, etc.
What is the difference between sublimation and deposition?
Sublimation: the process of a solid changing to a gas.
Deposition: the process of a gas changing to a solid.
How is the boiling point different in different liquids?
Some liquids boil at 100 degrees celsius but others boil at a much higher temperature
Is air considered matter? Why or why not?
What is the difference between a physical and chemical change?
A chemical change is irreversible, while a physical change is irreversible. A chemical change will create a new substance, while there is no new substance created with a physical change and a physical change is reversible.
What happens to the particles during evaporation?
They get heated up and the particles move faster and change into a gas
Why is there morning dew on the grass?
After a warm day, the air is humid and full of water. On a cool morning, the grass is cold. When the air has too much water, the water will condense on the colder surface.
What is absolute zero and can we reach it? What would happen to the particles?
The lowest possible temperature that is theoretically possible. No, we cannot reach it. The particles would stop moving, which is not possible.