CHEM 1

Question 1

study of properties of chemical and chemical bonds: chemical reaction and quantitative: solutions in solubility

Answer 1

Chemistry

Question 2

branch of science that deals with the properties, composition and structure of elements

Answer 2

Chemistry

Question 3

branch of science that deals with the properties, composition and structure of elements

Answer 3

Chemistry

Question 4

has fixed shape and volume

Answer 4

Solid

Question 5

have definite volume but indefinite shape

Answer 5

Liquid

Question 6

has no fixed volume or shape

Answer 6

Gas

Question 7

natural light

Answer 7

Plasma

Question 8

Liquid and gas

Answer 8

Boise Einstein

Question 9

Without changing the composition of the substances

Answer 9

Physical appearance

Question 10

With changing the composition of the substances

Answer 10

Chemical properties

Question 11

Characteristics or trait of matter that does not depend on the amount

Answer 11

Intensive property

Question 12

Depends on the amount of substances

Answer 12

Extensive property

Question 13

Refers to form of matter that has a definite( constant) composition

Answer 13

Substances

Question 14

Constant composition

Answer 14

Pure substance

Question 15

Simplest substance that cannot be broken down

Answer 15

Elements

Question 16

Two or more different element

Answer 16

Compound

Question 17

Uniform appearance throughout the appearance

Answer 17

Homogeneous

Question 18

Not uniform in appearance and component are observed

Answer 18

Heterogeneous

Question 19

Symbolic expression of a compound or substance
Shorthand of expressing atoms in a substance

Answer 19

Chemical formula

Question 20

N2O

Answer 20

Nitrous oxide

Question 21

CO2

Answer 21

Carbon dioxide

Question 22

C2H6O

Answer 22

Ethanol

Question 23

NaCl

Answer 23

Table salt

Question 24

C2H4O2

Answer 24

Vinegar

Question 25

C6H12O6

Answer 25

Glucose sugat

Question 26

C12H22O11

Answer 26

Sucrose (table sugar)

Question 27

NH4

Answer 27

Ammonia

Question 28

H2O2

Answer 28

Hydrogen peroxide

Question 29

Greek word "ISO's" and "topos"

Answer 29

The same place

Question 30

Isotopes are introduced by a British chemist

Answer 30

Frederick Soddy

Question 31

Refers to an atom of the same element which contains the same number of protons but different number of neutron

Answer 31

Isotopes

Question 32

Have stable proton-neutron combination and do not display any sign of decay

Answer 32

Stable isotopea

Question 33

If an atom has too many or too few neutrons (present)

Answer 33

Unstable isotopes

Question 34

Basic building block of matter that cannot be divided into smaller parts using chemical means

Answer 34

Atom

Question 35

Best described through different atomic models

Answer 35

Atomic structure

Question 36

Positive electric charge and is stable

Answer 36

Proton

Question 37

Positive electric charge and is stable

Answer 37

Proton

Question 38

No electric charge

Answer 38

Neutron

Question 39

Smaller than neutron and proton Evolving somewhere around the nucleus

Answer 39

Electron

Question 40

Sum of the numbers of protons and neutrons in an atom

Answer 40

Mass number

Question 41

Elements distinctive number of protons Represent the number of electrons in the same element

Answer 41

Atomic number

Question 42

described as a procedure, process, way or techniques

Answer 42

Method

Question 43

To move, segregate or keep apart

Answer 43

Seperate

Question 44

Constitute, section or a part of a larger whole

Answer 44

Component

Question 45

A substance produced when two or more pure substances are put together in any portion without chemical union

Answer 45

Mixture

Question 46

Refers to procedure or process of segregating or moving the constitute or part of a substance which is made up of two or more substance

Answer 46

Methods of separating components of mixture

Question 47

Process of separating the insoluble solid from the liquid substance pass through filtering agent

Answer 47

Filtration

Question 48

Solid particles which are retained in the filter paper

Answer 48

Residue

Question 49

Clear liquid which passes through a filtering paper

Answer 49

Filtrate

Question 50

Separate liquid layer known as supernatant and Heavy insoluble solid known as precipitate

Answer 50

Decantation

Question 51

Use of forceps, sieves, magnet and other similar tools

Answer 51

Mechanical separation

Question 52

Use of a motor device known as centrifuge that speeds up using centrifugal motion

Answer 52

Centrifugation

Question 53

Processes involve the evaporation and condensation of a liquid from mixture solution Boiling point

Answer 53

Distillation

Question 54

Use of different degrees to which substance are absorbed on the surface of filter paper

Answer 54

Chromatography

Question 55

chemical decomposition or breakdown produced by passing an electric current through liquid or solution

Answer 55

Electrolysis