Chem Final Exam Review

Front 1

Is vegetable soup a pure substance or mixture? If pure substance classify as element or compound, if mixture classify as homogeneous or heterogeneous.

Back 1

Heterogeneous Mixture

Front 2

Is Glucose, C6H12O6 a pure substance or mixture? If pure substance classify as element or compound, if mixture classify as homogeneous or heterogeneous.

Back 2

compound pure substance

Front 3

Is aluminum a pure substance or mixture? If pure substance classify as element or compound, if mixture classify as homogeneous or heterogeneous.

Back 3

pure substance, Element

Front 4

Physical or chemical change?
A silver bowl tarnishes over time.

Back 4

Chemical

Front 5

Physical or chemical change?
Wood burns in a stove.

Back 5

Chemical

Front 6

Physical or chemical change?
Alcohol evaporates quickly.

Back 6

Physical

Front 7

Element or Compound? a single atom or a molecule?
C60

Back 7

Element, molecule

Front 8

PCl3

Back 8

Compound, Molecule

Front 9

He

Back 9

Element, Atom

Front 10

Ti

Back 10

Titanium

Front 11

Cu

Back 11

Copper

Front 12

Sr

Back 12

Strontium

Front 13

Na

Back 13

Sodium

Front 14

Cs

Back 14

Cesium

Front 15

Ne

Back 15

Neon

Front 16

W

Back 16

Tungsten

Front 17

Si

Back 17

Silicon

Front 18

Cl

Back 18

Chlorine

Front 19

Mn

Back 19

Manganese

Front 20

P

Back 20

Phosphorus

Front 21

Au

Back 21

Gold

Front 22

How many sig figs?
600 kg

Back 22

1

Front 23

How many sig figs?
2.060 cm

Back 23

4

Front 24

How many sig figs?
0.0056 L

Back 24

2

Front 25

How many sig figs?
5 pencils

Back 25

infinite number of sig figs

Front 26

18.5g + 556.09g + 2.654g = 577.244g
answer with correct sig figs.

Back 26

577.2 g

Front 27

5.2cm x 3.6cm = 18.72cm2
answer with correct sig figs

Back 27

19 cm2

Front 28

Giga

Back 28

prefix symbol- G
Prefix value- 10^9

Front 29

Kilo

Back 29

prefix symbol- k
prefix value- 10^3

Front 30

centi

Back 30

prefix symbol- c
prefix value- 10^-2

Front 31

nano

Back 31

prefix symbol- n
prefix value- 10^-9

Front 32

milli

Back 32

prefix symbol- m
prefix value- 10^-3

Front 33

mega

Back 33

prefix symbol- M
prefix value- 10^6

Front 34

micro

Back 34

prefix symbol- u
prefix value- 10^-6

Front 35

proton # =

Back 35

atomic #

Front 36

neutron # =

Back 36

mass # - proton #

Front 37

Molecular weight

Back 37

is the sum of atomic weights of all atoms in a molecule

Front 38

Formula weight

Back 38

is the sum of atomic weights of all atoms in a formula unit of a compound

Front 39

When two atoms of the same element combine, they form a compound.

Back 39

False

Front 40

both a law and theory have been rigorously tested. the critical difference between the two is that when a theory is proven, it becomes a law.

Back 40

False

Front 41

a negative ion is termed an anion and is formed when nonmetals gain electrons.

Back 41

True

Front 42

in a neutral atom, the number of protons equals the number neutrons.

Back 42

False

Front 43

Molecular compounds form between a metal and a non metal.

Back 43

false

Front 44

A scientific theory explains the underlying basis for why scientific laws works.

Back 44

True