Ch 9

Question 1

The number of waves produced per unit time

Answer 1

Frequency

Question 2

What 2 things are inversely proportional

Answer 2

Wavelength and frequency

Question 3

Tells how fast waves travel through space

Answer 3

Speed

Question 4

Travels through space as electromagnetic radiation

Answer 4

Energy

Question 5

Radiation that takes many forms, such as sunlight, microwaves, radio waves, etc.

Answer 5

Electromagnetic radiation

Question 6

All electromagnetic waves travel at the speed of light and differ from each other in their frequency and wavelength

Answer 6

Vacuum

Question 7

The classification of electromagnetic waves according to their frequency is called

Answer 7

Electromagnetic spectrum

Question 8

Scientist also have much evident enough that light beams act as a stream of tiny particles called

Answer 8

Photons

Question 9

The distance between any 2 successive crests of troughs

Answer 9

Wavelength

Question 10

When atoms are energized, they often reemit the energy as _____
Give an example

Answer 10

Light

Neon lights

Question 11

The absorption and emission of light is due to what

What happens as a result of this

Answer 11

Due to the interaction of light with the electrons in the atom

As a result, atoms of different elements exhibit a unique color and wavelength of light

Question 12

A danish physicist, studied the hydrogen atom extremely, an developed a model for the atom that was able to explain the line spectrum

Answer 12

Neil’s Bohr

Question 13

Atoms consist of electrons orbiting the nucleus at different distances from the nucleus, called

Answer 13

Energy levels

Question 14

A model of the atom consisted of electrons orbiting the nucleus at different distance from the nucleus, called energy levels. In this model, the electron could only occupy particular energy levels, and could “jump” to higher level by absorbing energy

Answer 14

Bohr’s model

Question 15

What is the lowest energy level

Answer 15

Ground state

Question 16

What is the higher energy levels called

Answer 16

Excited state

Question 17

When electrons absorb energy though heating or electricity, they move to (higher/lower) energy levels and the levels become excited

Answer 17

Higher

Question 18

What happens when excited electrons return to the ground state

Answer 18

Energy is emitted as a photon of light is released

Question 19

How is the color of light determined

Answer 19

Its determined by the difference in energy

Question 20

What is produced by many of transitions between excited and ground states

Answer 20

Atomic spectrum

Question 21

Who created a mathematical model that showed electrons as both particles and waves

Answer 21

Erwin Shrodinger

Question 22

What did Erwin Shrodinger create

Answer 22

He created the quantum mechanical model

Question 23

The quantum mechanical model predicted electrons to be located in a probability region called _____

Answer 23

Orbitals

Question 24

What is defined as a region around the nucleus where there is a high probability of finding an electron

Answer 24

An orbital

Question 25

Each principal energy level is subdivided into what

Answer 25

Sub levels

Question 26

The sub levels are designated by the letters __, __, __, & __

Answer 26

S, p, f & d

Question 27

``` What is the number of orbitals within the sub levels vary with there type S sub levels=? Orbitals P sub level=? Orbitals D sub level =? Orbitals F sub level =? Orbitals ```

Answer 27

S=1 P=3 D=5 F=7

Question 28

What is the max number of electrons an orbital can hold

Answer 28

2

Question 29

Similarities of behavior in the periodic table are due to the similarities in the electron arrangement of the atoms. What is the arrangement called

Answer 29

Electron configuration

Question 30

Each orbital can be occupied by no more than 2 electrons, each with the (opposite/same) spin

Answer 30

Opposite

Question 31

The electrons occupy the orbital from the lowest energy level to the highest level. The energy of the orbitals on any level are in the following order A. S

Answer 31

A. S

Question 32

What is the horizontal rows in the periodic table called

Answer 32

Periods

Question 33

The vertical columns in the periodic table are called ____ or ____

Answer 33

Groups or families

Question 34

What is the outermost filled energy level called

Answer 34

Valence electrons