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Atomic Theory and Structure
Atomic Theory and Structure
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Review of the development of #atomic theory #atomic structure and #subatomic particles
Flashcards
21 cards
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Questions
21
Answers
1
Which of the following is NOT consistent with the results from Rutherford's experiment?
The nucleus of an atom is positively charged
Atoms are composed of mostly empty space
Electrons are in the nucleus of an atoms
The nucleus of an atom is almost all of the mass of the atom
2
Which of the following correctly lists the particles in order from least to most massive?
proton, electron, hydrogen atom, helium atom
electron, proton, hydrogen atom, helium atom
hydrogen atom, electron, helium atom, proton
proton, helium atom, hydrogen atom, electron
3
How many neutrons does this chlorine atom have?
-1
19
17
36
4
The number of protons minus the number of electrons is equal to
mass number
charge
zero
atomic number
5
Which of the following statements is FALSE?
Electrons have a negative charge
The neutron is found in the nucleus of an atom
Electrons have a mass of one AMU
The nucleus of an atom is positively charged
6
What is the atomic number and mass number of an atom with 11 protons and 12 neutrons?
Atomic number = 23 and mass number = 12
Atomic number = 12 and mass number = 11
Atomic number = 11 and mass number = 12
Atomic number = 11 and mass number = 23
7
How many neutrons does Chlorine-37 contain?
18
37
20
17
8
How many electrons does this chlorine atom have?
16
17
18
36
9
Elements differ because their atoms contain different numbers of:
Electrons
Protons
Neutrons
Nuclei
10
Which of the following is NOT part of Dalton's atomic theory?
Atoms that combine do so in simple whole number ratios
All element are composed of atoms
Atoms of the same elements are alike
Atoms are always in motion
11
How many protons does this Titanium atom have?
48
26
22
can't determine
12
What is the number of protons in Chlorine-37?
18
17
35
37
13
Isotopes differ because their atoms contain different numbers of:
Neutrons
Electrons
Nuclei
Protons
14
The atomic number is always equal to
the mass number
the number of electrons
the number of neutrons
the number of protons
15
What experiment did Rutherford perform?
Particle smash
Cathode Ray tube
Gold foil
Kinetic Molecular Theory
16
What was the experiment that JJ Thompson performed?
Electron microscope
Gold foil
Cathode ray tube
Alpha particle
17
The sum of protons and neutrons is equal to the:
atomic mass
atomic number
mass number
number of electrons
18
In a neutral atom, the number of electrons is equal to the number of
Neutrons
mass
Protons
Electrons
19
Dalton theorized that atoms of an element are indivisible. Today we know:
Dalton's theories are completely correct
All atoms of the same element have the same mass
Atoms of an element can have different numbers of protons
Atoms can be divided into smaller pieces
20
What was the model Thomson came up with as a result of his experiment?
Plum pudding
Electron orbital
JJ Thomson rules! model
Quantum model
21
How many neutrons does this Titanium atom have?
can't determine
22
48
26
