Quiz Review - Electromagnetic Radiation, Light, Electrons

Question 1

What is the amplitude of a wave?

Answer 1

The height of the wave from the center.

Question 2

What is the wavelength of a wave?

Answer 2

The distance of one complete wave cycle (crest to crest, or valley to valley)

Question 3

What is frequency?

Answer 3

How many times a wave will oscillate in a unit of time.

Question 4

What is the Speed of light (V)

Answer 4

3E8 m/sec

Question 5

Formula for energy of a photon:

Answer 5

E=hf

Question 6

What is Planck’s Constant (h)?

Answer 6

6.626E-34

Question 7

What equation links the speed of light (V) to wavelength and frequency?

Answer 7

V=λf. (λ=wavelength)(f=frequency)

Question 8

As frequency goes up, energy goes______

Answer 8

up

Question 9

What are 3 types of ionizing (dangerous) radiation?

Answer 9

Gamma, X-Ray, Ultraviolet

Question 10

What are 4 types of non-ionizing (safe) radiation?

Answer 10

Visible, infrared, microwave, radio

Question 11

Which color of visible light has the lowest amount of energy? The highest amount of energy?

Answer 11

Purple light represents a larger change in energy, and Red light represents the lowest change in energy.

Question 12

What does the emission spectra of an element tell you about the electrons in atoms of that element?

Answer 12

It tells the change in energy level (or change in the electron shell) of electrons in an atom.

Question 13

What is the ground state of an electron?

Answer 13

The state at which an electron has the lowest amount of energy.

Question 14

What is the excited state of an electron?

Answer 14

Any state at which the electron is at a higher energy level than its ground state.

Question 15

As atomic number goes up, atomic mass___

Answer 15

goes up

Question 16

What happens to atomic radius as you go down a group?

Answer 16

Atomic radius goes up.

Question 17

What group of elements have the smallest atomic radius?

Answer 17

Noble Gasses.

Question 18

What is ionization energy?

Answer 18

The amount of required energy that an isolated, gaseous atom in the ground state must absorb to discharge an electron.

Question 19

What happens to ionization energy as you move across a period?

Answer 19

It increases

Question 20

What group has the highest ionization energy? Hint: low atomic radius=high ionization energy.

Answer 20

Noble gasses

Question 21

What happens to electronegativity as you move across a period and down a group?

Answer 21

Increases across a period and decreases down a group.

Question 22

Which group has the lowest, and the highest electronegativity?

Answer 22

Group 17 has the highest, 18 has the lowest.