What was the problem with Bohr's model?

Model did not work with atoms that had 2 or more electrons

Where did Thomson think the electrons located in the atom?

Spread out evenly in a positive fluid

Which of the following statements is true about Bohr's model?

An electron moving from 2 -> 1 is a bigger transition than 6 -> 5

What did Rutherford observe in his gold foil experiment?

A few alpha particles bounced off the gold atoms

Which of the following was not part of Rutherford's model?

The electrons orbit the nucleus in circular orbits

Which of the following was not part of Dalton's model?

Atoms have a dense heavy center

What did Thomson see in his cathode ray tube experiment?

Beam bent towards positively charged plates

Which of the following is not true about Schrödinger's model?

defines the exact path the electron will take

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Atomic Theory + Parts of the Atom

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High School level chemistry

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Questions 30

Answers

1
atomic number equals
protons + neutrons
neutrons
number of protons
protons + electrons
2
What did Thomson actually discover?
Quark
Neutron
Electron
Proton
3
What was the problem with Bohr's model?
Electrons are actually in the nucleus
Protons actually orbit the nucleus
Electrons remain still outside the nucleus
Model did not work with atoms that had 2 or more electrons
4
It is possible to know where and how fast an electron is going around nucleus simultaneously.
False
True
5
In 1897, the second model of the atom was proposed by?
Bohr
Schrödinger
Rutherford
JJ Thomson
6
The neutron was discovered by?
James Chadwick
Rutherford
Heisenberg
Schrödinger
7
Which particle is so light we do not factor it in when doing mass number?
electrons
protons
All are factored in
neutrons
8
Where did Thomson think the electrons located in the atom?
Moved around the nucleus
orbited nucleus in clouds
Spread out evenly in a positive fluid
Center of the atom
9
Which of the following statements is true about Bohr's model?
An electron can orbit between energy levels 1 and 2
An electron can orbit at energy level 3.75
An electron moving from 2 -> 1 is a bigger transition than 6 -> 5
Takes more energy to move e- from levels 1 to 2 than 1 to 5
10
Dalton's model of the atom is called what?
Plum Pudding
Nuclear
Billiard Ball
Quantum
11
What did Rutherford observe in his gold foil experiment?
A few alpha particles bounced off the gold atoms
All alpha particles went straight through the gold foil
Most alpha particles bounced off the gold atoms
The alpha particles stuck to the gold atoms
12
Negatively charged particles are called
electrons
bosons
neutrons
protons
13
Which of the following was not part of Rutherford's model?
nucleus is positively charged
atom was mostly empty space
atom had a dense heavy center called the nucleus
The electrons orbit the nucleus in circular orbits
14
Thomson used what experiment as evidence for his atomic model?
Cathode Ray experiment
Leaning Tower of Pisa experiment
1920 Solar eclipse experiment
Gold foil experiment
15
Neutral particle is the
quark
neutron
electron
proton
16
Who was the first person to propose the idea of the atom?
Aristotle
Democritus
Dalton
Bohr
17
What did Rutherford call his model?
Foil model
Quantum model
Planetary Model
Nuclear model
18
positive charged particles are called what
Electrons
Gluons
Neutrons
Protons
19
The first modern person to propose a theory for the atom was?
Dalton
Rutherford
Thomson
Bohr
20
The final model of the atom was developed by?
Chadwick
Heisenberg
Schrödinger
de Broglie
21
Which of the following was not part of Dalton's model?
Atoms cannot be divided
Atoms of the same element are identical
Atoms have a dense heavy center
Atoms always form compounds in whole number ratios
22
Bohr stated what about the atom?
Electrons orbit with discrete energy levels
All are correct
Electrons move in circular orbits around nucleus
Electrons orbit at discrete distances
23
What did Thomson see in his cathode ray tube experiment?
Beam bent towards positively charged plates
Beam did not bend
Beam bent towards negatively charged plates
24
Aristotle's four elements were
fire, earth, water, air
earth, wind, fire, ice
solid, liquid, gas, plasma
fire, oxygen, water, earth
25
Charge equals
number of protons
protons + neutrons
number of electrons
protons minus electrons
26
Which of the following is not true about Schrödinger's model?
defines the exact path the electron will take
called the Quantum model
deals with the probability of finding an electron
Electrons orbit nucleus in clouds or orbitals
27
Who developed the fourth model of the atom and what was it called?
Rutherford, planetary
Bohr, Solar System
Bohr, nuclear
Schrödinger, Solid Sphere
28
protons and neutrons can be divided into what?
Quarks
protons and neutrons cannot be divided
Gluons
Both
29
What did Thomson name his model?
Quantum
Chocolate Chip Cookie
Plum Pudding
Solar System
30
Who performed the gold foil experiment?
Schrödinger
Rutherford
Dalton
Bohr

Atomic Theory + Parts of the Atom Flashcards | StudBud