Quiz 1 Unit 3

Question 1

Attractions

Answer 1

Electrons to nucleus stronger as it gets closer
Electrons to protons
Protons to neutrons

Question 2

Light

Answer 2

Comes from electrons
Electromagnetic waves

Question 3

How Did Four Colors Appear From One Electroned Helium?

Answer 3

When its electron jumps from higher energy level to a lower one, it releases a photon
Those photons cause different colours of light of different wavelengths due to the different levels

Question 4

Wavelength

Answer 4

Lambda
Upside down Y
Measured by crest to crest or trough to trough
Measured in nanometers

Question 5

Frequencey

Answer 5

Nu
Fancy V
Number of waves that pass a point in a given time
Measured in cycles, Hertz (Hz), s^-1, or 1/s
Not speed, all waves move at the speed of light

Question 6

Comparisons

Answer 6

Short wavelength, high frequency, high energy
Long wavelength, low frequency, low energy

Question 7

Electromagnetic Radiation

Answer 7

Form of energy that exhibits wavelike behaviours as it travels through space

Question 8

Amplitude

Answer 8

Determines intensity
Measured from middle to crest

Question 9

Electromagnetic Spectrum

Answer 9

Arrangement of all electromagnetic waves by decreasing wavelength and increasing frequency

Question 10

Spectrum From High Energy/Frequence to High Wavelength

Answer 10

Gamma, x-ray, ultraviolet, visible, infrared, microwave, TV radio, AM radio, long radio

Question 11

Equations

Answer 11

C=YV
Y=C/V
V=C/Y
C=Speed of light or 3.00x10^8 m/s
Lambda must be converted to meters

Question 12

Wavelength Spectrum in Meters

Answer 12

10^-9 X-Ray
10^-8 UV
10^-7 Visible
10^-6 Infra
10^-5 Micro

Question 13

Photoelectric Effect

Answer 13

Emission of electrons from a metal when light of a certain frequency shines on metal

Question 14

Quanta

Answer 14

Light does not produce energy continuously, but in packets called quanta

Question 15

Quantum

Answer 15

Minimum amount of energy lost or gained by an atom due to its energy levels

Question 16

Quantized Energy

Answer 16

Multiples of quanta in whole number multiples

Question 17

Energy Equation

Answer 17

E=hv
E=hc/y
E=Energy in joules (J)
h=Planck’s constant (6.626x10^-34 J*s)
v=Frequency

Question 18

Dual-Wave Particle

Answer 18

Wavelike properties while also a stream of particles

Question 19

Photon

Answer 19

Particle of electromagnetic radiation having zero mass and carrying a quantum of energy
Moves like waves

Question 20

Visible Light

Answer 20

Wavelength 10^-7m
Energy 10^19J
Frequency 10^14Hz

Question 21

Line-Emission Spectrum

Answer 21

Bands of light

Question 22

Ground State

Answer 22

Atom at its lowest energy level

Question 23

Excited State

Answer 23

Atoms absorb energy and move energy levels equivalent to amount of energy absorbed

Question 24

Continuous Spectra

Answer 24

White light that continuosly emits lines of all colors

Question 25

Line-Emission Spectra

Answer 25

Only certain lines of color are seen

Question 26

Absorption

Answer 26

Energy added to an atom in order to move an electron from a lower energy level to a higher energy level

Question 27

Max Planck

Answer 27

Proposed that light emits energy in small packets called quanta

Question 28

Albert Einstein

Answer 28

Stated that while light has wavelike properties, it is also a stream of particles called photons or the dual wave-particle nature

Question 29

Emission

Answer 29

When an electron falls to a lower energy level, a photon is emitted

Question 30

Bohr Model

Answer 30

The electron can only circle the nucleus in allowed paths, called orbits, and there is nothing in between

Question 31

Electricity

Answer 31

Electrons absorb energy from various sources