Unit 1

Question 1

AMU

Answer 1

Atomic Mass Units (u)
the measurement of mass for elements

1 = ABOUT a proton/neutron - don’t count on this

Question 2

molar mass

Answer 2

the mass of an element - measured by g/mol

Question 3

Groups on a Periodic Table

Answer 3

the columns

Question 4

Periods

Answer 4

the horizontal rows

Question 5

Group 1A/1

Answer 5

Alkali Metals

Question 6

Groupe 2A/2

Answer 6

Alkaline Earth Metals

Question 7

Group b/3-12

Answer 7

Transition Metals

Question 8

Group 7A/17

Answer 8

Halogens

Question 9

Group 8A/18

Answer 9

Noble Gases

Question 10

How do you determine the element?

Answer 10

The number of protons

Question 11

Isotopes

Answer 11

a different number of neutrons

Question 12

mass spectometry

Answer 12

a graph which has the mass and abundance of a certain element

Question 13

Average Molar Mass Calculation

Answer 13

{(amu x % composition) …+…+(amu x %composition)}

Question 14

Mole

Answer 14

6.022 x 10^23

Question 15

Combined Gas Law

Answer 15

PV = nRT

Question 16

What does R stand for in the Gas Law?

Answer 16

0.0821 L atm / mol K

Question 17

What is the Standard Temperature and Pressure (STP)

Answer 17

P = 1 atm
T = 273 K

(Moles = Volume / 22.4 L/mol)

Question 18

Molarity (M)

Answer 18

the measurement of calculation

(moles)/(volume)

Question 19

What is THAT Molarity equation

Answer 19

M1V1 = M2V2

Question 20

Empirical Formula

Answer 20

the Ratio

Question 21

Molecular Formula

Answer 21

the actual composition of an element

Question 22

What are electrons energy like?

Answer 22

they are QUANTIZED.

the farther they are from the nucleus, the higher their potential energy

Question 23

Electromagnetic Radiation

Answer 23

energy in the form of waves

Question 24

When an electron goes from a high energy level to a low energy level, it….

Answer 24

emits energy

Question 25

When an electron goes from a low energy level to a high energy level, it...

Answer 25

absorbs energy

Question 26

Ionization/Binding Energy

Answer 26

the energy level for an electron to be ejected

Question 27

Incoming Radiation Energy Equation

Answer 27

(Binding Energy) + (Kinetic Energy) Kinetic Energy = ejects the electron faster = more Energy

Question 28

What is the unit used for Ionization Energy?

Answer 28

eV

Question 28

eV = ?

Answer 28

1. 60 x 10^-19 Joules

Question 29

Photoelectron Spectra (PES)

Answer 29

the chart for binding energy and number of electrons

Question 30

n is equal to what?

Answer 30

energy level

Question 31

l is equal to what?

Answer 31

shape (n-1)

Question 32

Electron Configuration

Answer 32

the equation that tells you electron configuration

Question 33

What is the shorthand for electron configuration?

Answer 33

[Nobel Gas] + configuration

Question 34

Aufbau Principle

Answer 34

the electron is placed in increasing Energy subshells

Question 35

Pauli Excursion Principle

Answer 35

the electrons spin in OPPOSITE directions

Question 36

Hund's Rule

Answer 36

electrons pair up only after they have filled up all their other subshells

Question 37

What is stability based on in an electron?

Answer 37

if the last orbital is filled

Question 38

What is a valence electron?

Answer 38

the electrons in the last energy level (!)

Question 39

Electronegativity

Answer 39

electron attraction of an element

Question 40

what is electronegativity have depended on and what is the trend?

Answer 40

1. smaller radius = higher electronegativity down, decrease 2. shell completion left to right increase

Question 41

Electron Affinity

Answer 41

change in energy that occurs when an electron is added to a neutral atom generally exothermic reaction

Question 42

Effective Nuclear Charge (Zeff)

Answer 42

the positive attraction that the electron feels

Question 43

Electron Shielding

Answer 43

an inner electron blocks the electron on the outer layer - blocking attraction lowering Zeff

Question 44

mass number

Answer 44

(number of protons) + (number of neutrons)

Question 45

What is the equation of Zeff for an electron

Answer 45

Zeff = Z - S Z = atomic number S = sheilding effect

Question 46

Binding Energy Equation

Answer 46

BE = hv - KE

Question 47

speed of light equation

Answer 47

c = lambda x velocity