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Properties of Matter
The Physical Properties of Matter
Term | Definition |
---|---|
Mass | The amount of matter an object contains |
Volume | The amount of space something takes up. |
Solid | A state of matter that has a definite shape and definite volume. the particles of a solid are tightly packed. |
Liquid | A state of matter that has a definite volume but no definite shape. The particles of a liquid are closely packed and can slide past each other. |
Gas | A state of matter that has no definite shape and no definite volume. The particles of a gas move freely. |
Melting | A change of state from a solid to a liquid. energy is added. |
Condensation | The change in state from a gas to a liquid. energy is removed. |
Evaporation | The change in state from a liquid to a gas. energy is added. |
Freezing | The change in state from a liquid to a solid. energy is removed. |
thermal energy | the total kinetic energy (energy of motion) of the molecules in an object. |
Conduction | the transfer of thermal energy through direct contact. Ex: A frying pan on the burner of the stove. |
Convection | the transfer of thermal energy within a liquid or gas. |
Radiation | The transfer of thermal energy through electromagnetic waves. |
Independent Variable | In a scientific investigation, the factor that is deliberately manipulated (changed). |
Dependent Variable | In a scientific investigation, the factor that is measured or changes as a result of the independent variable. |
Controlled Variable | In a scientific investigation, the factors that must remain the same throughout the experiment. |