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Physical Sci Wk 1

Physical Science Week 1

TermDefinition
Boiling Point The temperature at which a liquid boils. Example: Water boils at 100 degrees Celsius.
Condensation The process by which a gas changes back into a liquid, due to cooling.
Evaporation The process by which a liquid becomes a gas,due to an addition of heat.
Freezing Point The temperature at which a liquid freezes. Example: Water freezes at 0 degrees Celsius.
Gas A state of matter in which the molecules are very spread apart. A gas has neither a definite shape or volume. Example: Water Vapor, Carbon Dioxide (CO2), or Oxygen (O2).
Liquid The state of matter in which the molecules are somewhat close together. It has a definite volume but no definite shape. Example: water, milk, gasoline.
Mass The amount of matter in an object. Mass is NOT dependent on the force of gravity, therefore it is NOT the same as weight.
Matter Anything that has mass and takes up space.
Melting Point The temperature at which a solid changes into a liquid. Example: Ice melts at 0 degrees Celsius.
Molecule The smallest particle of a substance that retains all the properties of the substance.
Properties A quality or trait belonging to an individual or thing. Can be used to identify substances.
Solid A state of matter in which the molecules are tightly packed together. A solid has a definite shape and volume. Example: Ice, Wood
Created by: jksmith93
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