Science Activities 1-3

Front 1

Element

Back 1

is any material that cannot be broken down into simpler materials by chemical means.

Front 2

Compounds

Back 2

When elements combine they form new substances.
Ex. water

Front 3

Electrolysis

Back 3

Electricity to decompose water into its elements, hydrogen and oxygen.

Front 4

Chemical Formula

Back 4

shows the symbols of the elements thta are combined to make the compound

Front 5

Kinetic Energy

Back 5

is equal to 1/2 the mass times the square of the speed of the particles

Front 6

Normal melting point

Back 6

The temp. of the ice increased until it reached 0 degrees.

Front 7

Normal freezing point

Back 7

when water changes from a liquid to a solid

Front 8

potential energy

Back 8

all the heat energy that was transferred caused a phase change during which the molecules of water were rearranging or decomposing

Front 9

Normal boiling point

Back 9

when water reaches 100 degrees

Front 10

Vaporized

Back 10

when liquid goes to a gas

Front 11

Sublimation

Back 11

the process where the solid goes directly to the gaseous state

Front 12

Pure Substances

Back 12

a substance that contains only one kind of particle

Front 13

solution

Back 13

a homogenous mixture of 2 or more substances

Front 14

solute

Back 14

the substance that dissolves in a solvent to form a solution

Front 15

solvent

Back 15

the substance in which a solute dissolves to form a solution.

Front 16

colloid

Back 16

the dispersed particles are larger than those in solution and may be visible on close inspection w/ a microscope

Front 17

Tyndall Effect

Back 17

when light passes through a colliod it is scattered and you can see where the light beam passes through

Front 18

suspensions

Back 18

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.