| A | B |
|---|
| solid | state or phase of matter with a defined shape |
| liquid | state or phase of matter that assumes the shape of it's container |
| gas | state or phase of matter that takes the shape of it's container AND it can be compressed |
| plasma | state or phase of matter which has so much energy that is found mostly in stars |
| dry ice | frozen carbon dioxide |
| liquid crystals and jello | substances that do not really fit into any state |
| glass, wax, rubber | examples of amorphous solids |
| salt, sand, gemstone | examples of crystalline solids |
| amorphous solids | solids without a regular repeating pattern |
| crystalline solids | solids with a regular repeating pattern |
| gas | molecules move faster than liquids in this state |
| solid | molecules move the slowest in this state |
| liquid | molecules move around each other in this state |
| gas or plasma | molecules can escape their container in this state |
| solid | if you add heat to this state of matter it melts |
| gas | if you take energy away from this state of matter it condenses into liquid |
| liquid | if you add energy to this state of matter it boils |
| faster | Increasing the temperature of a substance causes the molecules to move___________. |
| Phase change | This change happens when a substance either absorbs enough energy or gives off enough energy |
| Chemistry | study of matter and how it changes |
| matter | anything that has mass and occupies space |
| element | substance that cannot be broken down into simpler substances |
| atom | smallest particle that has the properties of an element |
| compound | substance made af atoms more than one element bound together |
| molecule | smallest unit of a substance that exhibits all of the properties of that substance |
| chemical formula | chemical symbols and numbers indicating the atoms contained in the basic unit of a substance |
| mixture | combination of more than one pure substance |
| energy | the ability to change or move matter |
| evaporation | the change of a substance from a bas to a liquid |
| sublimation | change of a substance rom a solid to a gas |
| chemical property | the way a substance reacts with others |
| Physical property | characteristic that can be observed without changing composition |
| melting point | temperature at which a solid becomes a liquid |
| boiling point | temperature when a liquid becomes a gas |
| chemical change | change occurs when a substance changes composition new substance |
| physical change | change in form not composition |
| fluid | a substance that flows liquid or gas |
| density | mass per unit volume |
