10

Question 1

Light is

Answer 1

Pure energy and has no mass

Question 2

Light behaves much like

Answer 2

A wave of

Question 3

The top of the wave is the
The bottom of the wave is the

Answer 3

Crest
Trough

Question 4

Distance between each trough or each crest is
Represented by the symbol
Measured in

Answer 4

A wavelength
Lambda
Meters

Question 5

Frequency
Units? Symbol?

Answer 5

of wavelengths that pass a given point per second

Hertz HZ
Nu (v)

Question 6

Velocity

Answer 6

Wavelength * Frequency

Question 7

What is a photon

Answer 7

Streams of tiny packets of energy

Question 8

Light waves are also known as

Answer 8

Electromagnetic Radiation

Question 9

ROY G BIV
Which way does energy go

Answer 9

Less energy ——- More Energy

Question 10

E-M

Answer 10

Electromagnetic radiation

Question 11

Most EM/light comes from ___ and is a result of _____

Answer 11

Within the atom
Excited electrons falling back to ground state

Question 12

How do electrons move to higher energy levels. What is this called

Answer 12

By absorbing distinct amounts of energy called Quanta
The excited state

Question 13

Electrons in the excited state are
Therefor

Answer 13

Unstable
They fall back to the “ground state”

Question 14

What electrons are most stable

Answer 14

Those in the lowest energy level

Question 15

When electrons fall
How fall it falls

Answer 15

It gives off EM radiation/light
Determines what type of radiation is emitted

Question 16

Hydrogen in an excited state

Answer 16

emits a photon to return to a lower energy state

Question 17

Hydrogen only emits

Answer 17

Certain colors of visible light when it releases a photon

Question 18

We only see

Answer 18

Selected colors, not those that give off white light.

Question 19

Hydrogen has discrete

Answer 19

energy levels that are quantized

Question 20

Every hydrogen

Answer 20

Falls in the same ways and gives off the same light.

Question 21

Hydrogens energy levels are quantized
What does quantized mean

Answer 21

A set of steps, only certain values are allowed.

Question 22

Bohr model
Only works for
Is it correct

Answer 22

Electrons orbit the nucleus
Different orbits equal different energy levels
Hydrogen
No

Question 23

Wave mechanical model

Answer 23

Electrons do not orbit the nucleus
Predicts the probability of finding an electron at given points around the nucleus.

Question 24

With the wave mechanical model location of electrons is shown using a

Answer 24

Probability map.

Question 25

Orbital Do they have exact size Contains

Answer 25

Probability map of an electron No 90% total electron probability

Question 26

Principle energy levels

Answer 26

Discrete energy levels electrons can occupy Lower number lower energy Lower number less distance from nucleus/closer

Question 27

Each energy level can be divided into More energy =

Answer 27

Sub levels More sub levels

Question 28

What are the 4 sub levels

Answer 28

S p d f

Question 29

How many orbitals are in each sub level How many electrons per orbital

Answer 29

S 1 P 3 D 5 F 7 2 electrons per orbital

Question 30

Number of sublevels ____ number of energy levels

Answer 30

Equals

Question 31

What is the shape of each orbital

Answer 31

S sphere P Dumbell D Clover F Hard to visualize

Question 32

Electrons want to be Electrons have

Answer 32

As close to nucleus as possible Spin

Question 33

Wave mechanical model can be applied

Answer 33

To all atoms

Question 34

Pauli Exclusion Principle-

Answer 34

2 electrons can occupy an orbital only if they have opposite spin

Question 35

Electron configuration

Answer 35

The way electrons are arranged around the nucleus Predicts

Question 36

Ionization energy More attraction

Answer 36

Energy required to remove outermost electron Harder to remove

Question 37

What does the atomic mass on the periodic table represent

Answer 37

weighted average mass of all the naturally occurring isotopes of that element