Solids, Liquids & Gases
What is gain energy.
Why does a gas not have definite shape or volume?
What is because the particles do not remain in contact with one another. (Lowest attractive forces)
the total internal kinetic and potential energy of all the particles in an object
What is thermal energy?
What is the difference between melting and freezing?
What is melting is when a solid changes to liquid due to thermal energy increasing. Freezing is when a liquid changes to solid because thermal energy decreases.
How can a liquid become a solid?
What is lose energy.
Phase change of a solid turning into a gas
What is sublimation?
The average kinetic energy of all the particles in an object.
What are temperature?
When a object melts is it gaining or losing energy? Explain.
What is gaining because in order to melt and become a liquid particles must gain energy so they can move apart?
What do crystalline and amorphous solids have in common?
What is both have definite shape and volume.
When a gas is cooled what happens ?
attractive forces increase and it becomes a liquid?
What is the volume of a gas?
What is the container that it is in or beyond (undefined)
The change in state form liquid to a gas.
What is vaporization?
A spoonful of jam had a definite shape and volume, but only if the spoon does not tip. Is this an amorphous solid, or a liquid with high viscosity?
Liquid with high viscosity.
Explain particle movement for solid, liquid, gas
What is: solid: vibrating particles, strong attractive forces
liquid: moderate attractive forces, moving particles, gas escaping fast particles, least attractive forces
What is surface tension?
What is a physical inward force, or pull among the molecules in a liquid that brings molecules at the surface closer together
What must happen to a liquid for it to become a gas?
What is it must gain energy.
What is a evaporation?
If there is high gas pressure above a liquid, what can you say about the amount of thermal energy required for the liquid to change to a gas?
What is a greater amount of TE will be needed for the liquid to change to gas?
Explain the two types of solids.
What is amorphic solids - no particle arrangement, and crystalline solids - have a repeating particle arrangement
Explain viscosity and give an example.
What is a resistance to flow. Honey has high viscosity and water has low viscosity.
When heat is added to a liquid and becomes a gas.
What is boiling?
A force over and area.
What is pressure?
Why can gases be put into a tank?
What is because it can be compressed?