Gen chem

Question 1

provides much if the information that informs the hyphothesis theories

Answer 1

measurement

Question 2

liters, pounds and centimeters are standard for measurement

Answer 2

unit

Question 3

7 base unit of SI system

Answer 3

length
meter
time
temperature
electric current
amount of substance
luminous intensity

Question 4

is the measure of the amount of space occupied by an object.

Answer 4

volume

Question 5

is the mass per unit volume of a substance

Answer 5

density

Question 6

recite the formulas

Answer 6

m= dv
d=m/v
v=m/d

Question 7

argued that all matter was composed of small , finate particles that called atomos

Answer 7

leucippus and democritus

Question 8

atomos derived the greek word

Answer 8

invisible

Question 9

he helped to revolutionize chemistry with his hypothesis that the behavior of matter could be explained using an anatomic theory

Answer 9

john dalton

Question 10

is an smallest unit of an element that can participate in chemical change

Answer 10

atom

Question 11

consist of atoms of two or more elements combined in a small whole number ratio.

Answer 11

compounds

Question 12

are neither created nor destroyed during chemical change

Answer 12

atoms

Question 13

explains that elements combine in ratios of simple whole numbers to form a compound

Answer 13

law of definite proportion

Question 14

explains that two elements react to form two or more different compounds, which one fixed or constant element, the mass ratio of the constant element in the compounds is expressed in the smallest whole number

Answer 14

law of constant composition

Question 15

the total mass of substances present at the end of a chemical process is the same as the mass of substances present before the process took place

Answer 15

law of conservation of mass

Question 16

one of the domains of chemistry, which known as the realm of everyday things that are large enough to be sensed directly by human sight or touch

Answer 16

macroscopic domain

Question 17

it has particles that are closely packed together and usually arranged in a regular pattern

Answer 17

solid

Question 18

argon in a tank is example of

Answer 18

gas

Question 19

it has no definite volume and shape

Answer 19

gas

Question 20

it takes the shape of the container forms horizontal surface and has fixed volume

Answer 20

liquid

Question 21

an objects measure of amount of matter in it

Answer 21

mass

Question 22

the force that gravity exerts on an object which is directly proportional to the mass of the subject

Answer 22

weight

Question 23

when matter is uniform throughout it is called

Answer 23

homogenous

Question 24

it has constant composition, and all its specimens have the same make up and properties

Answer 24

pure subtance

Question 25

about 84 out of 118 elements occured naturally on the earth

Answer 25

false

Question 26

this type of matter cannot be broken down into a simpler subtance by chemical change

Answer 26

element

Question 27

bronze is example of

Answer 27

homogenous

Question 28

composed of two or more types of matter that can be present in varying amounts can be seperated by physical changes such as evaporation

Answer 28

mixtures

Question 29

granite is an example of

Answer 29

heterogenous

Question 30

it exibits a uniform composition and appears visually the same throughout

Answer 30

homogenous

Question 31

salt in water is example of

Answer 31

homogenous

Question 32

when the matter can be simplified chemically it is called

Answer 32

compound

Question 33

the greek word atomos means

Answer 33

indivisible

Question 34

the idea that matter is composed of atoms was coined by

Answer 34

leucippus and democritus

Question 35

smallest particle of element

Answer 35

atom

Question 36

it consist of two or more atoms joined by strong forces called chemical bonds

Answer 36

molecules

Question 37

a property of matter that includes density, color, hardness, melting and boiling points, and electrical conductivity

Answer 37

physical

Question 38

a chnage that can be obsserve when wax melts, when sugar dissolves in coffee,and when the condences into liquid water

Answer 38

physical

Question 39

the mass and volume of a subtances are example of

Answer 39

physical

Question 40

it is anything that occupies space and possesses mass

Answer 40

matter

Question 41

a property of that doesnt depend on the amount of matter in it

Answer 41

intensive

Question 42

which of the domain of chemistry are red blood cells under

Answer 42

microscopic

Question 43

the domain contains the specialized language used to represent components of the macroscopic and microscopic

Answer 43

symbolic domain

Question 44

it has no shape and volume and has charged particles that are widely seperated

Answer 44

plasma

Question 45

flame is an example of

Answer 45

plasma

Question 46

it expands to fill the container

Answer 46

gas

Question 47

a process that converts sugar into alcohol is called

Answer 47

fermentation

Question 48

this type of matter can be broken down by chemical changes

Answer 48

compound

Question 49

all forms of combustion are example of

Answer 49

chemical

Question 50

the mass and volume of subtance are example of

Answer 50

phisycal

Question 51

example of intensive property

Answer 51

temperature

Question 52

if mass and volume of a subtance was combined , what property is it

Answer 52

extensive