Week 1

Question 1

Study of the composition, structure, and properties of matter, the processes that matter undergoes, and the energy changes that accompany these processes

Answer 1

Chemistry

Question 2

anything that has mass and occupies space

Answer 2

Matter

Question 3

characteristic that can be observed and measured without changing the identity and composition of the substance.

Answer 3

Physical Property

Question 4

takes place without any changes in molecular composition.

Answer 4

Physical Change

Question 5

ability of a substance to undergo changes to transform into a different substance

Answer 5

Chemical Property

Question 6

result in one or more substances of entirely different composition

Answer 6

Chemical Changes

Question 7

depends on the amount of matter present

Answer 7

Extensive Property

Question 8

depends on the type of matter

Answer 8

Intensive Property

Question 9

unchanging or specific composition

Answer 9

Pure Substance

Question 10

different pure substances that are physically combined in variable proportions

Answer 10

Mixture

Question 11

simplest type of matter that is composed of only one kind of atom

Answer 11

Element

Question 12

two or more elements combined chemically in definite proportions

Answer 12

Compound

Question 13

mixture in which the composition throughout is uniform

Answer 13

Homogenous Mixture

Question 14

mixture whose components are not evenly distributed

Answer 14

Heterogenous Mixture

Question 15

technique used for the purification of substances

Answer 15

Crystallization

Question 16

separation technique to separate solids from a solution

Answer 16

Crystallization

Question 17

used to separate solids from liquids or gases using a filter medium that allows the fluid to pass through but not the solid

Answer 17

Filtration

Question 18

fluid that passes through the filter

Answer 18

Filtrate

Question 19

solid that traps solid particles

Answer 19

Surface filter

Question 20

bed of material that traps solid.

Answer 20

Depth Filter

Question 21

uses gravity to filter a mixture

Answer 21

General Filtration

Question 22

used to quickly cool a solution, prompting the formation of small crystals;

Answer 22

Cold Filtration

Question 23

the solution, filter, and funnel are heated to minimize crystal formation during filtration

Answer 23

Hot Filtration

Question 24

allows a mixture of solid and liquid or two immiscible liquids to settle and separate by gravity

Answer 24

Decantation

Question 25

separates a mixture of solids, one of which is sublime

Answer 25

Sublimation

Question 26

used to separate out homogeneous mixtures where there are one or more dissolved solids

Answer 26

Evaporation

Question 27

effective method to separate mixtures comprised of two or more liquids; a purification process where the components of a liquid mixture are vaporized and then condensed and isolated.

Answer 27

Simple Distillation

Question 28

process by which components in a chemical mixture are separated into different parts (called fractions) according to their different boiling points

Answer 28

Fractional Distillation

Question 29

separation of a mixture by passing it in solution or suspension or as a vapor

Answer 29

Chromatography