Chem 201 Exam 1 Notes

Front 1

Length SI unit

Back 1

m

Front 2

Mass SI unit

Back 2

Kg

Front 3

Time SI unit

Back 3

s

Front 4

Giga-

Back 4

G 10^9 billion

Front 5

Mega-

Back 5

M 10^6 million

Front 6

Kilo-

Back 6

K 10^3 thousand

Front 7

Centi-

Back 7

C 10^-2 one hundredth

Front 8

Milli-

Back 8

m 10^-3 one thousandth

Front 9

Micro

Back 9

µ 10^-6 one millionth

Front 10

Nano

Back 10

n 10^-9 one billionth

Front 11

Pico

Back 11

P 10^-12 one trillionth

Front 12

Accuracy

Back 12

How close you are to the real result

Front 13

Precision

Back 13

How close are the measurements to one another

Front 14

< 5

> 5

= 5

Back 14

Round up

Round down

Round to even number

Front 15

Atomic number (Z)

Back 15

Number of protons

Front 16

Mass number (A)

Back 16

Number of protons + neutrons

Front 17

Isotope

Back 17

same element with different mass number

Front 18

Periodic table of elements labeling

Back 18

Front 19

Metals/non metals wall

Back 19

Po Bi Sn Al

Front 20

Speed formula

Back 20

Length / time

Front 21

Volume formula

Back 21

Length^3

Front 22

Density formula

Back 22

Mass / volume

Front 23

°F to °C

Back 23

T(°F)=(9/5)T(°C)+32

Front 24

K to °C

Back 24

T(K)=T(°C)+273.15

Front 25

Proton

(symbol and charge)

Back 25

P+
+1

Front 26

Electron

(symbol and charge)

Back 26

e-

-1

Front 27

Neutron

(symbol and charge)

Back 27

n

neutral

Front 28

atomic volume is determined by...

Back 28

electrons

Front 29

atomic mass is determined by...

Back 29

protons and neutrons

Front 30

neutrons function

Back 30

to diffuse the +1 charge of protons and allows them to exist together in the nucleus

Front 31

What is AMU/U/Da

Back 31

Atomic Mass Units

Front 32

Natural Abundance (or Percent Abundance)

Back 32

the mixture of different isotopes of the same element as found in nature

(take the AVERAGE MASS of all isotopes)

Front 33

Group 1 of elements

Back 33

Alkali metals

Front 34

Group 2 of elements

Back 34

Alkali earth metals

Front 35

Group 13 of elements

Back 35

no name (boron group)

Front 36

Group 16 of elements

Back 36

Chalogens

Front 37

Group 17 of elements

Back 37

Halogens

Front 38

Group 18 of elements

Back 38

Noble gases
(Inert gases)

Front 39

Monotomic

Back 39

1 atom

Front 40

Diatomic

Back 40

2 atoms

Front 41

Triatomic

Back 41

3 atoms

Front 42

Polyatomic

Back 42

> 1 atom

Front 43

What three characteristics define a molecule

Back 43

1. specific number of atoms

2. specific types of element

3. specific arrangement of atoms

Front 44

What is a compund

Back 44

bond with two or more elements

(H2O)

Front 45

Name the three types of compounds

Back 45

ionic

covalent

metallic

Front 46

allotrope

Back 46

different elemental forms of the same element

(O2 & O3)

Front 47

ionic bond

Back 47

attaction of + and -

Front 48

Constant charge cations

Back 48

elements thatalways produce the same positive charge

Front 49

1+ cations

Back 49

All elements in group 1

Silver

Front 50

2+ cations

Back 50

All elements in group 2

Zinc

Front 51

3+ cations

Back 51

All elements in group 13

Front 52

Variable charge cations

Back 52

Any other metals

Front 53

Constant charge anions

Back 53

groups 15, 16, and 17

Front 54

Hydrogen charge

Back 54

can be either + or -

Front 55

Covalent bond

Back 55

a bond in which atoms share electons

Front 56

Covalent compund

Ionic compound

Back 56

covalent bond only

ionic or ionic + covalent

Front 57

Polyatomic ion

Back 57

atoms are in a network, which has a net charge

Front 58

Isomers

Back 58

Molecules with the same atoms but with a different shape

Front 59

Binary

Diatomic

Back 59

2 different elements (CO)

2 atoms (O2)

Front 60

X1, X2, X3, X4, X5, X6, X10

Back 60

mono, di, tri, tetra, penta, hexa, deca

Front 61

% composition

Back 61

% composition = (# atoms)(atomic mass) / total mass of formula unit

Front 62

Empirical formula

Back 62

smallest molar ratio of elements in a compound

Front 63

True formula

Back 63

multiplier X emperical formula

Front 64

Multiplier

Back 64

true formula / empirical formula

Front 65

reagent

Back 65

either a reactant or product

Front 66

reactant

Back 66

a reagent on the left side of the chemical equation

Front 67

product

Back 67

a reagent on the right side of the chemical equation

Front 68

combustion

Back 68

a reaction between O2 and any one element or compound

Front 69

If a reactant of a combustion is C or a C compound, one of the products must be...

Back 69

CO2

Front 70

If a reactant of a combustion is H or a H compound, one of the products must be...

Back 70

H20

Front 71

If a reactant of a combustion is metal or a metal compound, one of the products must be...

Back 71

metal oxide

Front 72

4 steps to stoichiometry

Back 72

1. balance the equation

2. convert given unit to moles

3. use stoichiometric ratio

4. convert moles to desired units

Front 73

% yield

Back 73

actual yield / theoretical yield

Front 74

concentration

Back 74

amount of solute / amount of solvent or solution

Front 75

% concentration

Back 75

mass (or volume) or solute / sum of masses or volumes of all components

Front 76

malarity (m)

Back 76

mol solute / L solvnet