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18 Cards in this Set

  • Front
  • Back
is any material that cannot be broken down into simpler materials by chemical means.
When elements combine they form new substances.
Ex. water
Electricity to decompose water into its elements, hydrogen and oxygen.
Chemical Formula
shows the symbols of the elements thta are combined to make the compound
Kinetic Energy
is equal to 1/2 the mass times the square of the speed of the particles
Normal melting point
The temp. of the ice increased until it reached 0 degrees.
Normal freezing point
when water changes from a liquid to a solid
potential energy
all the heat energy that was transferred caused a phase change during which the molecules of water were rearranging or decomposing
Normal boiling point
when water reaches 100 degrees
when liquid goes to a gas
the process where the solid goes directly to the gaseous state
Pure Substances
a substance that contains only one kind of particle
a homogenous mixture of 2 or more substances
the substance that dissolves in a solvent to form a solution
the substance in which a solute dissolves to form a solution.
the dispersed particles are larger than those in solution and may be visible on close inspection w/ a microscope
Tyndall Effect
when light passes through a colliod it is scattered and you can see where the light beam passes through
Heterosgeneous mixture that contains fine solid or liquid particles in a fluid that will settle out spontaneously. By shaking the container they will again be dispersed throughout the fluid.