states of matter
What state of matter is characterized by having a definite shape and volume?
Solid
Which state of matter has a definite volume but takes the shape of its container?
Liquid
During which state of matter do particles have the most energy and move freely?
Gas
What is the fourth state of matter, found in stars and lightning?
Plasma
What state of matter has neither a definite shape nor volume?
Gas
Which state of matter is the most dense?
Solid
What happens to the particles in a gas when it is cooled down?
They condense into a liquid
At what temperature does water change from a liquid to a gas?
100 degrees Celsius
What is the process of a solid changing directly into a gas called?
Sublimation
Which state of matter is the most compressible?
Gas