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# Ch. 4 States of Matt

### Chapter 4 States of Matter.

TermDefinition
Matter Anything that takes up space and has mass.
Solid Matter with a definite shape and definite volume.
Liquid Matter that has a definite volume but no definite shape.
Viscosity A liquid's resistance to flow.
Surface tension The uneven forces acting on the particles on the surface of a liquid.
Gas Matter that does not have a definite shape or a definite volume.
Thermal energy The sum of the kinetic and potential energy of the particles in a material.
Temperature Measure of the average kinetic energy of the individual particles of a substance.
Heat Movement of thermal energy from a substance at a higher temperature to a substance at a lower temperature.
Melting Change of matter from a solid state to a liquid state.
Freezing Change of matter from a liquid state to a solid state.
Vaporization Change of matter from a liquid state to a gas.
Condensation Change of matter from a gas to a liquid state.
Evaporation Type of vaporization that occurs at the surface of a liquid as it enters the gaseous state.
Pressure Amount of force applied per unit area on an object's surface; SI unit is the Pascal (Pa).
Buoyant force Upward force exerted on an object immersed in a fluid.
Archimedes' principle States that the buoyant force on an object is equal to the weight of the fluid displaced by the object.
Density Physical property of matter that can be found by dividing the matter's mass by its volume.
Pascal's Principle States that when a force is applied to a confined fluid, an increase in pressure is transmitted equally to all parts of the fluid.
Crystalline solid solids where the particles are arranged in repeating, three dimensional patterns
Specific heat the amount of heat required to raise the temperature of 1 gram of a substance by 1 degrees Celsius
Energy the ability to do work or cause change
Kinetic energy energy an object has due to its motion
Created by: erunge