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35 terms

Phases of Matter

Ms. Chatellier
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Atom
The basic building blocks of matter, Atoms cannot be divided.
Boiling Point
The temperature at which liquid becomes a gas.
Chemical Property
A property that defines matter and how it interacts with other substances in the world.
Compress
To press or squeeze together.
Condensation
The phase change that occurs when vapor or gas cools and changes to liquid. Heat must be removed from the substance.
Condensation Point
The temperature at which a gas becomes a liquid.
Density
A physical property defined by dividing the mass of the substance by the volume.
Element
Substances that can't be separated into simpler substances and still act like the substance.
Evaporation
Slow VAPORIZATION
Freezing Point
The temperature at which a liquid becomes a solid.
Gas
Phase/state of matter where molecules move very fast, bounce off of each other. Indefinite shape and volume. Occurs after enough heat is added to a liquid.
Liquid
Phase/state of matter where molecules slide past each other and are not bonded to each other. Indefinite shape and definite volume. Occurs after enough heat is added to a solid to break the bonds. Takes the shape of the container.
Mass
A measure of how much matter there is in an object.
Matter
Anything that takes up space and has mass.
Molecules
The smallest part of a substance formed by chemical bonding. Water is and example of a molecule.
Melting Point
The temperature at which a solid becomes a liquid.
Phase
A physical condition or state of matter.
Physical Properties
The part of an object that can be experienced by using one of the 5 human senses (hear, see, smell, taste or feel)
Plasma
Phase/state of matter that has more energy than a gas. Plasma is different from a gas because it is made up of groups of positively (nucleus) and negatively charged particles (electrons) instead of atoms.
Property
describes how an object looks, feels or acts.
Solid
One state, or phase, of matter that is hard to compress and holds it's shape and has a definite volume. The atoms/molecules are bonded together in a set format where they vibrate in place.
State
A physical condition or phase of matter
Vapor
Another word for gas
Volume
The amount of space an object occupies.
Exothermic
Where heat is released
Freezing
Phase change from Liquid to Solid. Liquid loses energy.
Sublimation
Phase change from Solid to Gas. Dry Ice is an example.
Condensation
Phase change from Gas to Liquid. Water on the bathroom mirror or a ice water glass is an example. Gas loses energy.
Melting
Solid to Liquid. Solid gains energy.
Deposition
Phase change from Gas to a Solid without becoming a liquid. Frost is an example.
Vaporization
Phase change that occurs when a liquid atoms or molecules gain enough energy to change to gas.
Behavior of a substance during a phase change
Either absorbs or releases energy
Bose-Einstein
At super low temperatures (near absolute zero) atoms become super unexcited and super cold and clump together forming a super atom!
Boiling
Fast VAPORIZATION
Heat
In physics, a FORM of ENERGY associated with the movement of atoms and molecules in any material. The higher the temperature of a material, the faster the atoms are moving, and hence the greater the amount of energy present as heat.