Download Chapter 5 Review - Net Start Class

Chapter 5 Review
Atomic Theory/Scientists
Who
was the first person to
theorize the existence of the
atom in 400 BC?
Democritus
Atomic Theory/Scientists
Who
was given credit as the
first person that proved the
nature of atoms?
John Dalton
Atomic Theory/Scientists
According
to Dalton’s
Atomic Theory, all elements
are composed of tiny
indivisible particles
called_______?
atoms
Atomic Theory/Scientists
Dalton’s
Atomic Theory
stated that atoms of the
same _______ are identical.
element
Atomic Theory/Scientists
Dalton’s
Atomic Theory was
for the most part correct,
except for the fact that
atoms can be ________.
divided
Atomic Theory/Scientists
Who
is credited with
discovering the electron?
JJ Thomson
Atomic Theory/Scientists
Experiments
with cathode
ray tubes led to the
discovery of the ________.
electron
Atomic Theory/Scientists
The
rays produced in the
early cathode ray tube
experiments were attracted
to a _________ charge.
positive
Atomic Theory/Scientists
JJ
Thomson discovered that
electrons have a very_____
mass.
small
Atomic Theory/Scientists
Who
discovered the proton?
E. Goldstein
Atomic Theory/Scientists
Who
discovered the
neutron?
Chadwick
Atomic Theory/Scientists
What
happened to most of
the particles in Rutherford’s
gold foil experiment?
most passed through the
foil
Atomic Theory/Scientists
In
Rutherford’s experiment, a
few of the positive particles
bounced back, so what did he
concluded they bounced off
of?
a dense positive region called
the nucleus
Atomic Theory/Scientists
Who
discovered the
nucleus?
Rutherford
Atomic Theory/Scientists
Which
experiment did we
re-create in lab using
wooden boards and
marbles?
Rutherford’s gold foil
experiment
Subatomic Particles
Which
subatomic particle
has a negative charge?
electron
Subatomic Particles
Which
subatomic particle
has a positive charge?
proton
Subatomic Particles
Which
subatomic particle is
neutral?
neutron
Atoms
Atoms
are electrically
neutral because the number
of _________ equals the
number of ___________.
protons equal electrons
Atoms
What
is the charge of the
nucleus of an atom?
positive (because the
protons are positive)
Atoms
What
determines the
identity of an element?
the number of protons
Atoms
Isotopes
of the same
element differ in what two
ways?
mass number and number
of neutrons
Atoms
What
3 things do isotopes
of the same element have in
common?
atomic number, number of
protons and electrons
Atoms
How
do you find the
number of protons for an
atom?
same as the atomic number
Atoms
How
do you find the
number of neutrons for an
atom?
mass # - atomic #
Atoms
How
do you find the
number of electrons for an
atom?
same as the atomic number
Atoms
All
atoms of the same
element have the same
________ ________.
atomic number
Atoms
What
element is the
standard for determining
atomic mass units?
Carbon - 12
Atoms
The
average atomic mass
depends on the masses of
the isotopes and the relative
__________ of each
isotope.
abundance
Atoms
What
unit is used to
measure relative atomic
mass?
amu’s
Atoms
The
atomic mass listed on
the periodic table is a
_______ atomic mass.
average
Atoms
Sodium
has atomic number
11. If a sodium atom has a
mass of 23, how many
protons does it have?
11
(same as atomic number)
Atoms
Sodium
has atomic number
11. If a sodium atom has a
mass of 23, how many
neutrons does it have?
12
(subtract mass#-atomic#)
Atoms
Sodium
has atomic number
11. If a sodium atom has a
mass of 23, how many
electrons does it have?
11
same as atomic number
Atoms
A
carbon atom has 6
protons, 6 electrons and 8
neutrons. What is it’s mass
number?
14 (protons + neutrons)
Atoms
A
carbon atom has 6
protons, 6 electrons and 8
neutrons. What is it’s
atomic number?
6 (same as protons)
Atoms
Hg-200
has an atomic
number of 80. How many
neutrons does it have?
120
Atoms
Hg-200
has an atomic
number of 80. How many
protons does it have?
80
Atoms
Hg-200
has an atomic
number of 80. How many
electrons does it have?
80
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