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Physical Science 1
Term | Definition |
---|---|
Atom | the basic from which all elements are made |
Boil | the change in state from liquid to gas |
condense | the change in state from gas to liquid |
Evaporate | the process of which molecules at surface absorb enough engey to change to gas |
Freeze | the temp at which a liquid freezes |
Gas | a state of matter with no defined shape or volume |
Inert | having little or no ability to react |
Kinetic energy | energy that a moving object has due to motion |
Liquid | a state of matter that has mass and takes up space |
Matter | anything that has mass and takes up space |
Melt | the tempter at which a substance changes from a solid to a liquid |
Molecule | a neutral group of two or more atoms held together by covalent bonds |
Particle | smallest possible unit of matter |
Particle motion | ways in which atom ions or molecule move |
Phase | a physically distinctive from matter such as a solid liquid or gas |
Phase change | a change from one state (solid or liquid or gas) to anther without change in chemical composition |
Pressure | the physical force exerted on an object |
Pure substance | a substance made of only one kind of matter and having a definite properties |
Solid | a state of matter that has a defined shape and volume |
System | a group of parts that work together as a whole |
Temperature | a measure of the average energy of motion of the particles of a substance |
Thermal | The total kinetic energy and potential energy of all the particles of an object |
Vapor | gaseous state of a substance that is a liquid or a solid at room temperature |
Condition | the transfer of thermal energy from one object to another |
Convection | he transfer of thermal energy by the movement of a fluid |
radiation | he transfer of energy by electromagnetic waves |