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Phys Science
Term | Definition |
---|---|
Atom | Basic particle from which all elements are made;the smallest particle of an element that has the properties of that element |
Boil | the change in state from a liquid to gas |
Condense | The change of a gas to liquid |
Evaporate | The process by which molecules at the surface of a liquid absorb enough energy to change to a gas |
Freeze | The temp at which a liquid becomes a solid |
Gas | A state of matter with no define shape or volume |
Inert | Having little or no ability to react |
Kinetic Energy | Energy that an object has due to its motion |
Liquid | A state of matter that has no definite shape but has volume |
Matter | anything that has mass and takes up space |
Melt | The temp at which a substance changes from solid to a liquid |
Molecule | A neutral group of two or more atoms held to together by covalent bonds |
Particle | Smallest possible unit of matter |
Particle Motion | Ways in which atoms, ions, or molecules move |
phase | A physically distinctive form of matter such as solid, liquid, gas |
phase change | A change from one state to another without a 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 definite properties |
solid | A state of matter that has a definite shape and volume |
system | A group of parts that work together as a whole |
Temp | A measure of the average energy of motion of the particles of an object |
Thermal energy | The total kinetic an potential energy of all the particles of an object |
vapor | Gaseous state of a substance that is a liquid or a solid at room temp |
Conduction | The transfer of thermal energy from one object to another |
convection | The transfer of thermal energy by the movement of fluid |
Radiation | The transfer of thermal energy by electromagnetic waves |