States of Matter
What happens to the amount of matter during a phase change?
a. stays the same
b. increases
c. decreases
The amount of matter stays the same! A
The reason that liquids "flow"
What is particles are close together but can slide past each other in order to "flow".
The phase change from gas directly to a solid.
Deposition
What is a solid?
This type of matter contains particles that are close together and vibrate in place.
A state of matter is determined by...
Particle arrangement, speed,
does it have a volume and shape?
What is a liquid?
Has definite volume and takes the shape of its container
Describe a gas...
This state of matter has particles moving fast enough to overcome nearly all of the attraction between them
no set volume or shape
The phase change from a solid directly to a gas.
Sublimation
Called a solid that has a very orderly, repeated pattern in arrangement of particles
Crystalline solid
Liquids take the shape of the container they are in..
What is the name of water in a gas state of matter?
Water vapor
The phase change from liquid to gas at the surface of the liquid.
evaporation
Does freezing need energy or lose energy? Is that endothermic or exothermic?
freezing loses energy so exothermic
least = gases
middle = liquids
most = solids
Vaporization gains energy as a liquid turns to gas. This is endothermic
This theory says all matter is in constant motion.
The Kinetic Theory of Matter
What two phase changes are endothermic?
melting and vaporization
What is plasma?
A state of matter with no definite shape or volume. It is a hot, energized gas where the atoms break apart into charged particles. These particles can carry electricity and respond to magnets. The fourth state of matter.
Temperature at which ice melts into liquid.
What is 0 degrees C and 32 degrees F?
Name two examples of plasma.
Lightening, the sun, stars, northern lights, flames
What two phase changes are exothermic?
condensation and freezing
What is the name of the solid with no repeating pattern or consistent arrangement of particles?
amorphous solid