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physical science 1
Term | Definition |
---|---|
Atom | The basic particle from which all elements ;the smallest particle of an element that has the properties of that element. |
boil | The change is state from a liquid to a gas. |
Condense | The change is state from a gas to a liquid. |
Evaporate | The process by witch molecules at the surface of a liquid absorb enough energy to change a gas. |
freeze | the temperature at which liquid freezes. |
Gas | A state of matter with no definite 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 defined shape but has a definite volume. |
Matter | Anything that has mass and takes up space. |
Melt | The temperature 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 atoms, ions, or molecules move |
Phase | A physically distinctive form of matter, such as a solid, liquid or gas |
Phase Change | A change from one state(solid or liquid or gas) 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. |
Temperature | A measure of the average energy of motion of the particles of a substance. |
Thermal energy | The total kinetic and potential energy of all the particles of an object. |
Vapor | Gaseous state of a substance that is a liquid of a solid at room temperature. |
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 energy by electromagnetic waves. |