States of Matter
Name the three common states of matter
Solids Liquids and Gases
Changing from a Solid to a liquid
Melting
How do particles move in a solid?
Vibrate
What happens to the thermal energy of a substance as it melts?
Increase
Freebie
100
What state of matter has definite shape and volume?
Solids
When a liquid turns into a gas it is called ______?
Evaporation
Describe the particle movement in a gas.
They move very fast and collide with one another.
What does thermal energy do to the particles of a solid when it is heated?
Increase
State of matter where particles have enough energy for freedom of motion with no definite shape, as well as to spread out with no definite volume.
Gas?
Which state of matter fills the shape of its container but has a fixed volume?
Liquids
[WORTH DOUBLE] What is the difference between evaporation and boiling?
Evaporation occurs at the surface while boiling occurs throughout the liquid
Why does the temperature remain the constant during a phase change?
It does not increase the kinetic energy (movement).
The heat only breaks bonds of the molecules
Why does the temperature of a substance remain constant during a phase change?
Because the heat is being used to break or form bonds not add movement (kinetic energy)
Particles require _____ to change state between a solid, liquid and a gas.
Heat
Which states of matter is ice cream?
Solid
Define sublimation and provide an example.
Solid turning into gas. (varying answers) Dry Ice
Compare the particle movement in a liquid and gas.
They both move faster than solids
Explain what happens to a gas when thermal energy is removed.
Decreased thermal energy and particles slow down
What is Deposition?
Deposition is the movement from gas to solid without the liquid phase
Describe gases in terms of volume and shape.
Gases have no definite volume or shape
Explain why condensation is an exothermic process (release heat).
Exothermic = Exo (exit/leaving) + Thermic (Heat)
Gases loses heat to become liquids
What happens to particle movement when a substance reaches absolute zero?
It does not move
[WORTH DOUBLE] How does the increase in thermal energy affect the potential (stored) and kinetic (movement) energy of particles?
As thermal energy increases, kinetic energy increases also. Potential energy can also increase depending on the situation.
Evaporation occurs when
Energy (heat) forces the bonds that hold water molecules together to break