Atomic Structure Notes

Question 1

What does the structure of atoms dictate?

Answer 1

The periodic properties of elements

Question 2

What was the issue with Rutherfords model of the atom?

Answer 2

It did not show properties and its stable

Question 3

What is matter?

Answer 3

A particulate that has mass and a well defined position

Question 4

What does energy have?

Answer 4

Wave like properties with out mass or a fixed position

Question 5

What do Atoms and molecules do?

Answer 5

Emit and absorb energy

Question 6

What do subatomic particle have properties of?

Answer 6

Properties of both particles and waves

Question 7

What does electromagnetic radiation consist of?

Answer 7

Waves

Question 8

What is a Wave?

Answer 8

A vibration by which energy is transmitted

Question 9

What 3 parameters characterize waves?

Answer 9

Wavelength (λ)
Frequency (v)
Speed (s)

Question 10

What is the speed of all electromagnetic raditation?

Answer 10

The speed of light c = 3x10^8

Question 11

What is the formula that relates speed, wavelengths and frequency?

Answer 11

c = v λ

Question 12

How can radiation be emitted or absorbed?

Answer 12

In small quantities

Question 13

What is the energy of radiation proportional to?

Answer 13

Their frequency

Question 14

What is a Quantum?

Answer 14

The smallest amount of energy that could be absorbed or emitted in the form of electromagnetic radiation

Question 15

What is the formula for the energy of a Quantum?

Answer 15

E = hv

Question 16

When does a change in an atoms energy occur?

Answer 16

When the atom absorbs or emits one or more packets of quanta E = nhv

Question 17

What did Einstein say electromagnetic radiation was?

Answer 17

He said electromagnetic radiation was a flux of particles called photons

Question 18

When is an electron able to break free?

Answer 18

When it absorbs a photon of enough energy to break its attraction to the atom

Question 19

Which surface of the metal do electrons leave?

Answer 19

The metal above the threshold frequency

Question 20

What affects the intensity of the current?

Answer 20

The intensity of the light shone

Question 21

What increases the number of electrons ejected?

Answer 21

Increasing the intensity of the light with the frequency above the threshold frequency

Question 22

What increases the kinetic energy of released electrons?

Answer 22

Increased frequency of light

Question 23

What is n = 1?

Answer 23

The ground state

Question 24

What is n = 2?

Answer 24

The first excited state

Question 25

What is n = 3?

Answer 25

The second excited state

Question 26

What does it mean when an electron breaks free?

Answer 26

It has been ionized

Question 27

What does an electron undergoing a transition with a large difference give rise to?

Answer 27

A photon with a short wavelength