Deck

Question 1

Chemistry is the study of

Answer 1

composition, structure, properties, and changes of matter.

Question 2

The composition of matter relates to the

Answer 2

to the kinds of elements it contains

Question 3

structure of matter relates to the

Answer 3

ways the atoms of these elements are arranged

Question 4

any characteristic that gives a sample of matter its unique identity.

Answer 4

property.

Question 5

an entity composed of two or more atoms with the atoms attached to another in a specific way.

Answer 5

A molecule

Question 6

What are the states of matter?

Answer 6

Solid, Liquid, gas

Question 7

have no fixed shape or volume and can be compressed to form liquids

Answer 7

Gas

Question 8

have no shape, but they do have a volume.

Answer 8

Liquid

Question 9

are rigid and have a definite shape and volume.

Answer 9

Solid

Question 10

Kinds of pure substances

Answer 10

Element and compund

Question 11

Building blocks of matter

Answer 11

Elements

Question 12

are composed of two or more elements joined chemically

Answer 12

Compounds

Question 13

states that the elemental composition of a pure compound is always the same.

Answer 13

law of constant composition, also called the law of definite proportions

Question 14

____ have variable compositions and can be either homogeneous or heterogeneous;

Answer 14

Mixtures

Question 15

matter does not change its composition, Changes of state

Answer 15

Physical change

Question 16

In a ______, a substance is transformed into a chemically different substance.

Answer 16

chemical change (chemical reaction)

Question 17

are independent of the amount of matter examined and are used to identify substances

Answer 17

Intentsiveroperty

Question 18

relate or depends to the amount of substance present.

Answer 18

Extensive Property

Question 19

a characteristic that can be used to describe or identify matter

Answer 19

Property

Question 20

Boiling point, density, melting point, odor, temperature, color, state of matter

Answer 20

Intensive Property or Physical Property

Question 21

Volume, height, weight, length, mass

Answer 21

Extensive Property

Question 22

do depend on amount of substance

Answer 22

Extensive

Question 23

Rusting of iron, tarnishing of silver, combustion of gasoline, Hardening of cement

Answer 23

Chemical property

Question 24

is a mixture that does not have a uniform composition and in which the individual substances remain distinct

Answer 24

Heterogenous mixture

Question 25

Has a uniform composition, also called as solution

Answer 25

Homogenous mixture

Question 26

are mixtures containing particles that settle out if left undisturbed.

Answer 26

Suspension

Question 27

are heterogeneous mixtures of intermediate sized particles (between 1nm and 1000 nm) and do not settle out.

Answer 27

Colloids

Question 28

is when dispersed colloid particles scatter light.

Answer 28

Tyndal effect

Question 29

are homogeneous mixtures that contain two or more substances called the solute and solvent.

Answer 29

Solution

Question 30

• A substance that dissolves in a solvent is?

Answer 30

Soluble

Question 31

• Two liquids that are soluble in each other in any proportion are

Answer 31

Miscible

Question 32

• A substance that does not dissolve in a solvent is

Answer 32

Insoluble

Question 33

• Two liquids that can be mixed but separate shortly after are

Answer 33

Immiscible

Question 34

uses differences in the boiling points of substances to separate a homogeneous

Answer 34

Distillation

Question 35

solid substances are separated from liquids and solutions.

Answer 35

Filtratiom

Question 36

technique separates substances on the basis of differences in solubility in a solvent

Answer 36

Chromatography

Question 37

is a traditional way of separating the palay seeds from the hay by utilizing the wind or blowing air.

Answer 37

Winnowing

Question 38

is a process of separating components of mixture of metallic and nonmetallic substance by using a magnet.

Answer 38

Magnetism

Question 39

is a physical water treatment using gravity to separate the suspended solids from the liquid portion.

Answer 39

Sedimentation

Question 40

is a method of separating components of mixtures by removing a layer of liquid, generally one from the settled solid particles. The purpose is to produce a clean decant (liquid portion), or to remove undesired liquid from the precipitate (or other layers).

Answer 40

Decantation

Question 41

one of the easiest way to make a turbid solution clean is by this process. It describes the chemical process of contact and adhesion where the dispersed particles form larger cluster allowing the easy separation from water.

Answer 41

Flocculation

Question 42

using a coagulating agent to remove the impurities of an unclean or unclear solution. It allows the removal of suspended and colloidal particles which is the first stage in solid-liquid separation.

Answer 42

Coagulation

Question 43

0used to separate soluble solids from liquids utilizing heat, i.e. in salt solution salt, can be separated from water by evaporation.

Answer 43

Evaporation

Question 44

characteristics that do involve change in a chemical makeup of substance

Answer 44

chemical property

Question 45

do not involve in a change in the chemical substance of a mixture

Answer 45

physical property