Final

Question 1

How to find empirical formula

Answer 1

If given percent, the percent is grams (assume 100g)

Find miles of each through stoich

Divide each by smallest number of moles

Question 2

How to find molecular formula

Answer 2

Find molar mass of empirical

If given real molar mass, divide by empirical mass

Take that number and multiply formula

Question 3

Entropy

Answer 3

Disorder of a system

Question 4

How to find what has greatest entropy

Answer 4

Largest molecules and highest states of matter have greatest entropy

Question 5

Entropy change is measured in

Answer 5

Δs

Question 6

In order for an endothermic reaction to be spontaneous under standard conditions and constant pressure…. what’s up with Δa and Δh/t

Answer 6

Δs must be positive and greater than Δh/t

Question 7

What’s the difference between internal energy change Δu and enthalpy change Δh

Answer 7

Work

Question 8

What is a spontaneous process

Answer 8

It occurs on its own

Question 9

For quantum number stuff, what is L

Answer 9

N-1 or less (it’s the orbital) ex-2P

Spdf numbers

S-0

P=1

D=2

F=3

Question 10

What is m sub l (quantum number)

Answer 10

Number of sub orbital

It can be + or - L

(Write out the written electron theory thing with the ups and downs) (the last electrons placement is the sub level )

Question 11

What is VSEPR bro is same as electron pair geometry? Is it polar or non polar

Answer 11

Non polar

Question 12

What dictates mass change in an atom

Answer 12

Number of neutrons

Question 13

Isotopes

Answer 13

Same element with different mass number/number of neutrons

Question 14

What is the identity of an atom determined by

Answer 14

Protons

Question 15

Isomer

Answer 15

Two or more compounds with same formula but different arrangement of atoms

Also has different properties

Question 16

Allotrope

Answer 16

Two or more physical forms which an element can exist in

Question 17

What can be lost from nucleus that doesn’t result in charge of atomic number

Answer 17

Neutrons

Question 18

What did Rutherford’s gold foil experiment show

Answer 18

Atoms were mostly empty space

Question 19

Electromagnetic spectrum in terms of high to low

Answer 19

X rays 
If rays 
Visible
Infrared
Microwaves
TV
radio

Question 20

What does the L quantum number determine

Answer 20

Angular momentum

Question 21

Entropy measures

Answer 21

Energy going out in the universe

If surroundings are increasing, system is decreasing

Question 22

Emission

Answer 22

When electron returns to ground state by releasing extra energy absorbed

Question 23

Absorption

Answer 23

When atom changes from ground state to excited state

Question 24

Isoelectric

Answer 24

Having no net charge or difference in electron potential

Think or noble gas configuration?

Question 25

How does Mg differ from Mg2+

Answer 25

Ion has inert gas electron configuration Atom does not

Question 26

Which term best characterized relation of hydrogen to deutreium

Answer 26

Isotope

Question 27

Deuterium

Answer 27

One of two stable isotopes of hydrogen | 2h

Question 28

Protium

Answer 28

Another stable isotope of hydrogen (1h)

Question 29

Tritium

Answer 29

Hydrogen radioactive isotope (3h)

Question 30

Alpha particle

Answer 30

2 protons and 2 neutrons released from an atom Has a charge of +2 and interacts with matter greatly

Question 31

Equation of wavelength if given speed

Answer 31

λ=h/mass x velocity

Question 32

How to determine what the m sub s quantum number is

Answer 32

It will be + or - 1/2 depending on if last electron is an up or down arrow (Down is -)

Question 33

What are the two types of bonds that have expected conductivity when solid is FUSED

Answer 33

Ionic Metallic

Question 34

What is the only type of bond with a high expected conductivity when in a SOLID state?

Answer 34

Metallic

Question 35

Melting point of a mixture is expected to be _____than melting point of a pure substance

Answer 35

Lower

Question 36

Lower vapor pressures have ____ surface tension

Answer 36

Greater

Question 37

Substances with a lower vapor pressure have ______ tendency to change from liquid to gas

Answer 37

Little

Question 38

What mass of gases will escape most quickly through a pinhole leak

Answer 38

Light gasses

Question 39

Partial pressure

Answer 39

Force exerted by gas Heavier gassed have more partial pressure

Question 40

Avogadro principle with gas

Answer 40

Equal volumes of any gas under the same temperature and pressure conditions will contain the same number of particles

Question 41

Average kinetic energy is proportional to..

Answer 41

Temperature

Question 42

When finding how much WATER needs to be added to a stock solution, what do you do?

Answer 42

Find difference between v1 and v2

Question 43

What is a unit cell

Answer 43

the smallest group of atoms of a substance that has the overall symmetry of a crystal of that substance, and from which the entire lattice can be built up by repetition in three dimensions.

Question 44

What effects vapor pressure of a liquid

Answer 44

Temperature

Question 45

Work function

Answer 45

Energy needed to eject electrons from surface | Stuff below frequency won’t eject light

Question 46

Exceptions to hunds rule

Answer 46

Cr Cu Ag Mo

Question 47

Lattice energy guidelines

Answer 47

Greater the difference in charge makesattice energy go up Bigger diameter makes lattice energy go down

Question 48

Intensive physical qualities

Answer 48

Not dependent on quantity

Question 49

Extensive physical properties

Answer 49

Dependent on physical quantity | Ex-boiling point

Question 50

How to get from Celsius to kelvin

Answer 50

C plus 273.15