1.2 the composition of matter

Question 1

matter

Answer 1

is anything that has mass and takes up space.

Question 2

substance

Answer 2

is another word for matter

Question 3

pure substance

Answer 3

is a substance of constant composition that possesses definite qualities

Question 4

four basic substance

Answer 4

earth, air, fire, water

Question 5

element

Answer 5

is a pure substance that cannot be broken down into simpler substances by physical or chemical means.

Question 6

atoms

Answer 6

is the smallest particle into which an element can be divided and still be the same substance.

Question 7

compound

Answer 7

is a pure substance consisting of atoms of two or more elements that are chemically combined in a fixed proportion.

Question 8

molecule

Answer 8

A particle consisting of two or more atoms bonded together

Question 9

mixture

Answer 9

is a combination of two or more substances that are not chemically combined.

Question 10

heterogeneous mixture

Answer 10

is a combination of substances in which the particles are not uniformly distributed and can readily be separated.

Question 11

homogenous mixture

Answer 11

is a combination of substances in which the properties and appearance are the same throughout and the individual particles are not easily separated.

Question 12

Distillation

Answer 12

is a method used to separate homogeneous liquid mixtures.

Question 13

Filtration

Answer 13

is the use of paper or other materials to remove solid particles from a liquid mixture

Question 14

Chromatography

Answer 14

is a method of separating substances based on the tendencies of different substances to be adsorbed* at different rates.

Question 15

Adsorption

Answer 15

is the adhesion of atoms, ions or molecules from a gas, liquid or dissolved solid to a surface.

Question 16

suspension.

Answer 16

A mixture in which the particles of a substance are mixed throughout but are large enough that they will settle

Question 17

colloid

Answer 17

is a mixture in which the particles of a substance are mixed throughout and are not large enough to settle.

Question 18

tyndall effect

Answer 18

the scattering of light by colloids