CHAPTER 4+5

Question 1

SPEED OF LIGHT FORMULA

Answer 1

C=3.00 x 10^8

C= λv

Question 2

PLANCK’S EQUATION

Answer 2

h=6.626 x 10^-34
E= hv
where e is energy, v is frequency, h is the equation

Question 3

CHARACTERISTICS OF ELECTROMAGNETIC RADIATION

Answer 3

strikes metal’s surface, electrons ejected causing electric current

Question 4

A QUANTUM OF ELECTROMAGNETIC

Answer 4

is called a photon

Question 5

PHOTOELECTRIC EFFECT

Answer 5

emission of electrons when light hits a metal, if it has enough energy

Question 6

GROUND VS EXCITED

Answer 6

GROUND - lowest energy state of an atom

EXCITED - higher potential energy state than ground

Question 7

BOHR MODEL

Answer 7

electrons travel in perfect circles (orbits)

Question 8

HEISENBURG UNCERTAINTY

Answer 8

impossible to determine position and velocity of electron/other particles
TEST ANSWER - does not tell you where electrons are

Question 9

ORBITALS

Answer 9

shapes, can hold 2 electrons per line

Question 10

AUFBAU

Answer 10

electrons occupy lowest energy level

Question 11

PAULI

Answer 11

no 2 electrons in same atom have same quantum number

Question 12

HUND

Answer 12

orbital’s energy occupied by one electron before given another

Question 13

MENDELEEV

Answer 13

father of periodic table

Question 14

MOSELEY

Answer 14

ARRANGED PERIODIC TABLE BY ATOMIC NUMBER

Question 15

LANTHANIDES & ACTINIDES

Answer 15

14 elements, top row of f block

14 elements, bottom row of f block

Question 16

PERIODIC LAW

Answer 16

physical and chemical properties follow pattern with atomic numbers

Question 17

ELECTRONEGATIVITY

Answer 17

tendency for an atom to attract shared electrons

Question 18

IONIZATION ENERGY

Answer 18

amount of energy required to remove electrons

Question 19

ELECTRON AFFINITY

Answer 19

energy change from adding electrons to gaseous atoms

Question 20

ATOMIC RADIUS

Answer 20

radius of nucleus distance to electron shells

Question 21

BLOCKS

Answer 21

S - 0 //
P - 1 //
D - 2 | DROP 1 //
F - 3 | DROP 2

Question 22

QUANTUM NUMBERS

Answer 22

element name : (energy level, quantum #, orbital diagram, 1/2 or -1/2)
B : (2,1-1,1/2)
Ar : (3,1,1-1/2)

Question 23

HIGHEST IONIZATION, AFFINITY, NEGATIVITY

Answer 23

FLOURINE - NEGATIVITY AND AFFINITY

FRANCIUM - IONIZATION

Question 24

NOBLE GASES

Answer 24

Group 18A or 8A elements, chemically unreactive

Question 25

HYDROGEN

Answer 25

proton donor, own group

Question 26

ALKALI METALS

Answer 26

Group 1A or 1 elements

Question 27

ALKALINE METALS

Answer 27

Group 2A or 2 metals, most reactive METAL

Question 28

HALOGENS

Answer 28

Group 7A elements, most reactive NONMENTALS