States of Matter
What are the 3 states of matter?
Solid, liquid, and gas
Which state of matter are the molecules moving the SLOWEST?
solid
What is the phase change that occurs when a solid changes to a liquid?
What is the chemical formula for dry ice?
CO2
Which state of matter has a definite shape?
Solid
Which state of matter are the molecules moving the FASTEST?
Gas
When ______ energy is increased, it causes melting and/or sublimation.
Thermal energy
What is condensation?
The phase change from a gas to a liquid.
Which state of matter has a definite VOLUME but not a definite SHAPE?
Liquid
When we add _______ energy, it causes the motion of the molecules to increase.
What is sublimation?
When a solid changes directly to a gas. Like solid CO2 (dry ice)
What is the basic shape of a liquid?
A liquid takes the shape of it's container.
Which state of matter has no shape and no volume?
Teacher will check paper
Melting and sublimation
As thermal energy increases both _____ energy and ______ rise as well.
Kinetic energy & pressure.
What is the 4th state of matter?
Plasma
At what temperature does liquid change to a solid?
32 degrees Fahrenheit
What are the TWO phase changes that occur when thermal energy is decreased?
Freezing and condensation
Dry ice doesn't melt to a liquid. Instead it changes directly from a solid to a gas. This phase change is called what?
Sublimation