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Physical Science Chapter 4 Test review
isotope
is carbon-11 a isotope?
Physical Science Chapter 4 Test review
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1
is carbon-11 a isotope?
True
False
2
isotope
different number of electrons
same number of protons but different number of neutrons
same number of protons and neutrons
a charged particle
3
How many protons in this atom?
40
10
20.18
20
4
What does the electron cloud model describe?
the mass of the electrons in an atom
the most likely locations of electrons in atoms
the precise locations of electrons in atoms
the number of electrons in an atom
5
How many neutrons does Carbon-13 have
13
3
2
7
6
What do you need to do to find the number of neutrons in an atom?
Add the number of protons to the total mass
Subtract the electrons from the atomic mass
The number of protons always equals the number of neutrons
Subtract the number of protons from the total mass
7
Protons in Y
50
39
88.906
40
8
Carbon-13 Has a mass number of
2
10
13
14
9
Who drew this model of an atom?
JJ Thomson
Ernest Rutherford
Niels Bohr
John Dalton
10
What charge do protons have?
Positive
Negative
None
Neutral
11
Which element has +8 protons?
Tungsten
Hydrogen
Nitrogen
Oxygen
12
Carbon-13 and Carbon-14 are examples of _______________ for the carbon element.
ions
isotopes
indicators
isomers
13
How many neutrons does boron have?
6
11
5
10
14
Who conducted the gold foil experiment?
Bohr
Thomson
Dalton
Rutherford
15
What Charge Does A Neutron Have?
Positive
Negative
All of the above
Neutral
16
The location of the neutron is the _______________.
Nucleus
Cloud
17
mass number=
# of neutrons + # of electrons
# of electrons - # of protons
# of electrons + # of protons
# of protons + # of neutrons
18
Where can you find protons?
orbiting around the nucleus
in the nucleus
19
How many protons are in boron?
B
11
6
5
20
What is a Bohr model?
The showing of the energy
Is the nucleus surrounded by orbiting electrons
The number of protons
21
An atom that has lost or gained electrons.
Ion
Protons
Ionic bonds
Covalent Bonds
22
How many electrons does Potassium have?
40
39
19
20
23
Protons have a _________ charge?
Positive
Negative
24
Which model of the atom is used today?
Bohr Model
Billiard Ball Model
Plum Pudding Model
Electron-Cloud Model
25
An atom in the excited state contains
more electrons than the ground state
fewer electrons than the ground state
more potential energy than the ground state
less potential energy than the ground state
26
How does the state of atoms in a neon light change when light is emitted?
Atoms stay at the excited state
Atoms go from a ground state to an excited state
Atoms return from an excited state to a ground state
Atoms stay at the ground state
27
How many electrons does Nitrogen have?
13
7
.007
14
28
Where are the electrons located
Nucleus
Cloud
Orbitals
29
Dalton's model of an atom is best described as
a solid sphere
an electron cloud
a plum pudding
a solar system
30
What is the charge of an electron?
No charge
Negative
Positive
31
How many neutrons does magnesium have?
24
13
24.305
12
32
A student drew this model of an atom. What is wrong with this model?
The particles with a positive charge are neutrons.
All particles in the middle should have a positive charge.
The Neutrons and Electrons should switch places.
All of the neutrons should be on the same ring.
33
John Dalton created the first atomic theory
True
False
34
What did John Dalton compare the atom to?
Rice pudding
Billiard balls
Snails
A plum pudding
35
Ground state is the..?
lowest allowable state of an atom
equal allowable state of an atom
highest allowable energy state of an atom.
smallest allowable state of an atom
36
How did John Dalton Contribute to the Atomic Theory?
electrons jumping from one orbit to another
atoms are atoms
shows thats atoms were small and positively charged
experiments on gases led to discovery of a mixture of gases
37
How many protons are there?
2
4
9
5
38
What was the gold foil experiment
How to determen the mass of electrons by using gold foils
How JJ Thompson learned about atoms by using gold foil
Shot a beam of alpha particles at a sheet of gold foil
hailey washa
39
What do scientists use to predict the location of an electron?
statistics
calculus
probability
luck
40
In the plum pudding model of the atom...
both pudding and plums are negative
both pudding and plums are positive
negative pudding and positive plums (electrons)
positive pudding and negative plums (electrons)
41
The Bohr model shows:
All of the valence electrons only
All of the atom's electrons in orbits
All of the atom's protons in orbits
All of the neutrons in orbits
42
How many neutrons does neon have?
20
11
12
10
43
how do you find the number of protons???
atomic number - mass
mass - atomic number
Atomic mass
Atomic number
44
How many electrons does Aluminum have?
26
26.982
13
14
45
The gold foil experiment was important because
The atom has protons orbiting the nucleus
The atom has electrons in the nucleus
There must be a nucleus at the center of the atom
The atom is a solid spherical object
46
How many protons are in sodium?
Sodium
12
23
11
