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ICP CHEM: 4.1 Studying Atoms and 4.2 The Structure of an Atom Flashcards | StudBud
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ICP CHEM: 4.1 Studying Atoms and 4.2 The Structure of an Atom
ICP CHEM: 4.1 Studying Atoms and 4.2 The Structure of an Atom
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#Democritus #Dalton #Thomson #Rutherford #subatomic particles #atomic number #mass number #isotopes
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1
Atoms of the SAME element have
the same atomic number.
different atomic numbers.
the same mass number.
2
The three subatomic particles are
the ion and the molecule.
the electron, the ion, and the molecule.
the electron, the proton, and the neutron.
the proton and the neutron.
3
This man is given credit for discovering the nucleus with the Gold Foil Experiment.
Democritus
Rutherford
Dalton
Thomson
4
The smallest subatomic particle is the
ion.
proton.
neutron.
electron.
5
Mass number is defined as
the sum of electrons and neutrons in an atom.
the sum of protons and electrons in an atom.
the sum of protons and neutrons in an atom.
the weight of an atom.
6
Thomson's model of the atom is sometimes called the
Pool Ball Model
Solar System Model
Chocolate Chip Cookie Model
Nuclear Model
7
A subatomic particle
is smaller than an atom.
goes underwater like a submarine.
is larger than an atom.
8
Atomic number is defined as
the number of protons in an atom.
the number of energy levels in an atom.
the number of neutrons in an atom.
the phone number of an atom.
9
In the Gold Foil Experiment, why weren't ALL the alpha particles deflected?
b/c the nucleus is so large compared with the whole atom
b/c the nucleus is so small compared with the whole atom
10
If a beam of particles was attracted to a negatively charged plate, you could assume that
the beam is made up of positively charged particles.
the beam is made up of negatively charged particles.
the beam is made up of neutral particles.
11
The ancient Greek philosopher who believed all matter consisted of extremely small particles.
Democritus
Thomson
Rutherford
Dalton
12
Like charges
repel
attract
13
Atoms of different elements must have
the same atomic number.
the same mass number.
different atomic numbers.
14
The two subatomic particles that are almost the same size are the
electron and the neutron.
electron and the proton.
proton and the neutron.
15
Dalton's model of the atom is sometimes called the
Solar System Model
Nuclear Model
Pool Ball Model
Chocolate Chip Cookie Model
16
Dalton proposed that all matter is made up of individual particles called atoms,
which cannot be further divided.
which can be divided into protons, electrons, and neutrons.
17
Scientists accepted Dalton's Atomic Theory but not the idea of Democritus because
Democritus lived so long ago.
they liked Dalton better.
Dalton had data from experiments and Democritus did not.
18
_____ are atoms of the same element that have different numbers of neutrons.
Molecules
Ions
Isotopes
19
An electron is a
negatively charged particle in the "cloud" part of an atom.
positively charged particle in the "cloud" part of an atom.
positively charged particle in the nucleus of an atom.
negatively charged particle in the nucleus of an atom.
20
An atom of Oxygen-18 contains
18 protons, 18 electrons, and 18 neutrons.
8 protons, 8 electrons, and 10 neutrons.
8 protons, 8 electrons, and 8 neutrons.
21
All the positive charge of an atom is concentrated in the
energy levels
cloud
neutrons
nucleus
22
According to Dalton's Atomic Theory, an atom is
the largest piece of matter that can exist.
the smallest piece of matter that can exist.
23
This man is given credit for discovering the electron.
Rutherford
Democritus
Thomson
Dalton
24
This man provided the first evidence that atoms can be divided into smaller pieces.
Rutherford
Dalton
Thomson
Democritus
25
The neutral subatomic particle discovered by James Chadwick is the
ion.
proton.
electron.
neutron.
26
The three ways to distinguish between the electron, proton, and neutron are
mass, density, and color.
mass, charge, and color.
volume, charge, and location within the atom.
mass, charge, and location within the atom.
27
The proton is
a positively charged particle in the "cloud" part of an atom
a neutral particle in the "cloud" part of an atom.
a neutral particle in the nucleus of an atom.
a positively charged particle in the nucleus of an atom.
28
Opposite charges
attract
repel
29
Which of the following statements is NOT a part of Dalton's Atomic Theory?
All atoms have the same mass.
All elements are composed of atoms.
30
An atom of Hydrogen-3 contains
1 electron, 1 proton, and 1 neutron.
1 electron, 1 proton, and 2 neutrons.
3 electrons, 3 protons, and 3 neutrons.
