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Atoms and Atomic Theory
Atoms and Atomic Theory
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General questions about atomic theory and periodic table.
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1
In an atomic model that includes a nucleus, positive charge is
located in the space outside the nucleus.
spread evenly throughout an atom.
concentrated in the center of an atom.
concentrated at multiple sites in an atom.
2
Atoms of the same element with a different mass are called...
isotopes
atoms
elements
molecules
3
In an atom with a neutral charge...
Protons = Electrons
Protons = Neutrons
Neutrons = Electrons
Unicorns
4
How many energy levels does Potassium (K) contain?
3
4
2
1
5
If element Q has 11 protons, its atomic ____________________ is 11.
Signature
Cloud
Mass
Number
6
Protons and ____________________ are found in the nucleus of an atom.
Electrons
Protons
Chocolate babies
Neutons
7
In Rutherford’s experiment particles that bounce back from the foil struck the __ in the atoms.
other stuff...uh...thingy
empty space
Nucleus
electron cloud
8
All the electrons in an atom are located in the __________________ .
electon cloud
positive center
Nucleus
negative center
9
In Niels Bohr’s model ofthe atom, electrons move
like planets orbiting the sun.
like beach balls on water waves.
like popcorn in a popcorn popper.
like balls rolling down a hill.
10
How many valance electrons are in a Chlorine (Cl) atom??
17
1
3
7
11
How many neutrons are in a Lithium atom?
7
3
4
6
12
The nuclei of isotopes contain different numbers of ____________________.
Neutrons
Protons
Electrons
Energy Levels
13
The pieces that make up atoms are called _______________________?
Subnuclear Particles
Uh...you know...those one things
Superatomic Particles
Subatomic Particels
14
Who provided evidence for the existence of a nucleus in an atom?
Thomson
Democritus
Dalton
Rutherford
15
Rutherford’s gold foil experiment provided evidence for which of thefollowing statements?
Alpha particles have a positive charge.
Gold is very dense.
Atoms contain mostly empty space
Atoms have positive and negative charges
16
How many protons are in a Lithium atom?
3
4
6
7
17
J. J. Thomson’s experiments provided evidence that an atom
has a negative charge.
is the smallest particle of matter.
contains negatively charged particles.
has a positive charge.
18
What element is found in period 4 group 3?
Titanium
Boron
Scandium
Evansonium
19
Neutrons and ____________________ have almost the same mass.
Electrons
Chocolate Babies
Nuclei
Protons
20
Which subatomic particle has a negative charge?
electron
neutron
proton
evanstron
21
The number of protons inone atom of an element is that element’s
mass number
atomic number
isotope number
balanced charge
