Science Vocabulary

Front 1

Pure Substance (defintion and examples)

Back 1

Matter that has definite chemical and physical properties
-made up of only 1 kind of material
-is the same throughout, all the particles are exactly the same
-if there is more than 1 element, the atoms are chemially combined

Ex. water, carbon dioxide (CO2), oxygen, carbon, salt (NaC1)

Front 2

Mixture

Back 2

Matter that contains two or more substances that differ in physical and chemical properties.
-easily separated
-each substance has its own specific properties.
-not chemically combined

Ex. Salad, sand, vegetables, tacos, food, colored water

Front 3

Heterogeneous Mixtures

Back 3

Has varied composition throughout, the particles settle out, the particles are not dissolved.

Ex. Muddy water, oil and water, salad

Front 4

Homogeneous Mixtures

Back 4

Has the same composition throughout, does not settle out, and particles are dissolved-in a solution.
Ex. Solutions- salt and water

Front 5

Soluble

Back 5

A substance is said to be soluble if it dissolves in another substance.

Front 6

Insoluble

Back 6

A substance is insoluble in a substance if it does not dissolve in that substance.

Front 7

Solvent

Back 7

A homogeneous mixture of a solvent and a solute.
The solute is finely divided and evenly dispersed throughout the solvent.
It is uniform throughout.

Front 8

Solute

Back 8

The substance in the solution that is dissolved by the solvent.
The substance in the solution that there is less of.

Ex. In a salt and water solution - salt is the solute.

Front 9

Solution

Back 9

A homogeneous mixture of a solvent and a solute.
The solute is finely divided and evenly dispersed throughout the solvent.
It is uniform throughout.

Front 10

Dissolve

Back 10

When a substance dissolves in another substance, the particles of the solute spread out evenly throughout the solvent and a solution is formed.
***The solid solute does not become a liquid

Front 11

Solubility

Back 11

The amount of solute that will dissolve in a solvent at a given temperature and pressure.

Ex. For salt, it is 35g/100 mL of water at 25˚C

Front 12

Saturated Solution

Back 12

A solution that will not dissolve any more solute at a given temperature or pressure.
Ex. If copper sulfate is added to a tube of saturated solution of copper sulfate, the crystals will remain undissolved at the bottom of the tube

Front 13

Filtration (filtering)

Back 13

The process of separating a solid and liquid by passing a mixture of the two through a mesh (usually filter paper).

Front 14

Filtrate

Back 14

The liquid that passes through the filter paper (most likely a solution).

Front 15

Residue

Back 15

The solid that remains on the filter paper.