Chapter 4- Electrons In Atoms

Question 0

Why were scientist interested in the electrons

Answer 0

The give the element its chemical properties.

Question 1

Why did scientist consider rutherfords nuclear model of the atom incomplete

Answer 1

The electron should be drawn into the nucleus

Question 2

What do electrons not identity

Answer 2

Do not identify the atom, protons do

Question 3

What kind of waves have the longest wavelength? Shortest?

Answer 3

Longest: long radio waves
Shortest: gamma waves

Question 4

What waves have the lowest frequency

Answer 4

Radio waves

Question 5

Which has a high frequency microwaves or X-rays

Answer 5

XRay

Question 6

Which waves can be seen by the eye

Answer 6

Visible

Question 7

How are the terms frequency and wavelength related

Answer 7

Inversely, as one increases the other decreases

Question 8

What is quantum energy

Answer 8

It is the smallest quality of radiate energy

Question 9

What phenomena can only be explained by the particle model

Answer 9

Photoelectric magnet

Question 10

Difference between the continuous spectrum of white light and the atomic emission spectrum of an element

Answer 10

White light: shows all of the colors

Emission spectrum: only shows discrete bonds of light

Question 11

How does an electron get from one energy level to another

Answer 11

It absorbs energy and jumps to a higher energy level

Question 12

What happens when the electron falls from a higher energy level to a lower energy level

Answer 12

loses and gives off energy

Question 13

Why do lines in the hydrogen emission spectra have a specific wavelength

Answer 13

The electron exist in specific energy levels

Question 14

What does the word quantized mean

Answer 14

It is only distributed in specific amounts

Question 15

Why should a continuous spectrum be produced when the light from a hydrogen tube is shined through a prism

Answer 15

The electron should be loosing energy and as it does the wavelength varies

Question 16

Ground state

Answer 16

Electron is at its lowest energy level

Question 17

Excited state

Answer 17

Electron absorbs energy and is in a higher energy level

Question 18

Where did Bohr say the electron can be found

Answer 18

Around the nucleus

Question 19

What did Bohr say about the energy of the electron when it is an orbit

Answer 19

It is constant

Question 20

Where does the electron or atom have the lowest energy

Answer 20

Close to the nucleus

Question 21

What is between the nucleus and the lowest energy level

Answer 21

Empty space

Question 22

What is the energy of the photon

Answer 22

If the electron absorbs energy from a photon it can jump to a higher level

Question 23

What is wrong with bohrs model

Answer 23

It only explains the line spectrum for hydrogen

Question 24

According the Bohr why did the line emission spectra contain only certain frequencies of light

Answer 24

The electron only exists in the energy levels not in between photons

Question 25

How did Louis deBroglie describe the electron

Answer 25

The electron are considered as waves confined to the space around an atomic nucleus

Question 26

What happens to an electron when a photon is used to try to find it

Answer 26

The photon knocks the electron off course

Question 27

What is the Heisenberg Uncertainty Principle

Answer 27

It isn’t possible to know the exact location and velocity of an electron at the same time

Question 28

What does the schrodinger equation describe

Answer 28

Describes the probability of finding and electron with a math equation

Question 29

How is an orbital difference from bohrs orbit

Answer 29

The orbital holds 2 electrons

Question 30

What do quantum numbers describe

Answer 30

They tell us locations of electrons

Question 31

Do atomic orbitals have a exactly defined size

Answer 31

No bc electrons are in constant motion

Question 32

How many electrons does an orbital hold

Answer 32

2