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WorksheetsPhysical Science chemistry review
Total questions: 75
Worksheet time: 51mins
Name
Class
Date
1.
In Niels Bohr’s model of the atom, electrons move
a)
like balls rolling down a hill.
b)
like popcorn in a popcorn popper.
c)
like beach balls on water waves.
d)
like planets orbiting the sun.
2.
A particle that moves around the nucleus is a(n)...
a)
Proton
b)
Neutron
c)
Electron
d)
Quark
3.
True or False? Neutrons have a negative charge
a)
True
b)
False
4.
Particles in an atom that are neutral and have no charge are
a)
negatrons
b)
electrons
c)
neutrons
d)
protons
5.
the central region of an atom where its neutrons and protons are is its
a)
nucleus
b)
electron cloud
c)
core
d)
center
6.
The positive particles of an atom are
a)
electrons
b)
positrons
c)
neutrons
d)
protons
7.
Which is the smallest?
a)
electron
b)
proton
c)
atom
d)
neutron
8.
Which of the following has all of the subatomic particles that make up an atom?
a)
Protons, Nucleus, Electrons
b)
Neutrons, Nucleus, Protons
c)
Electrons, Quarks, Protons
d)
Electrons, Protons, Neutrons
9.
An atom has an atomic number of 15 and a mass number of 31. How many protons are there in the atom?
a)
15
b)
31
c)
16
d)
47
10.
An atom has an atomic number of 30 and a mass number of 65. How many neutrons are in the atom?
a)
30
b)
65
c)
35
d)
95
11.
An atom has 5 protons and 7 neutrons. What is the atomic number of the atom?
a)
5
b)
7
c)
2
d)
12
12.
What is the Atomic Number?
a)
7
b)
6.941
c)
3
d)
6
13.
How many Protons+Neutrons are in one atom of Lithium?
a)
6.941
b)
7
c)
3
d)
6
14.
How many Protons+Neutrons are in one atom of Lithium?
a)
6.941
b)
7
c)
3
d)
6
15.
How many Neutrons are in one atom of Lithium?
a)
6.941
b)
7
c)
3
d)
4
16.
How many Protons are in one atom of Lithium?
a)
3
b)
6
c)
7
d)
6.941
17.
How many Electrons are in one atom of Lithium?
a)
3
b)
6
c)
7
d)
6.941
18.
All atoms of the same element have the same
a)
atomic mass
b)
mass number
c)
number of neutrons
d)
atomic number
19.
The atomic number of an atom is _____________________.
a)
The mass of the atom
b)
The number of protons added to the number of neutrons
c)
The number of protons
d)
Negatively charged
20.
An electron is in a region outside the nucleus. An electron ____________.
a)
Is larger than a proton and has no charge
b)
Has less mass than a proton and has a negative charge
c)
Is smaller than a proton and has no charge
d)
Has a positive charge
21.
The atomic mass of an element is equal to:
a)
# of protons
b)
# of neutrons
c)
# of electrons
d)
Total # of protons and neutrons.
22.
What do these isotopes of carbon all have in common?
a)
neutrons & mass number
b)
atomic number and neutrons
c)
atomic number and electrons
d)
protons, atomic number, and mass number
23.
What quantities vary between isotopes of an element?
a)
protons, electrons, and atomic mass
b)
protons, electrons, and atomic number
c)
neutrons and electrons
d)
neutrons and mass number
24.
What element is this? What is the mass number of this atom?
a)
sodium, 23
b)
magnesium, 23
c)
magnesium, 12
d)
sodium, 11
25.
What do scientists use to predict the locations of electrons in atoms?
a)
Algebra
b)
Calculus
c)
Probability
d)
Geometry
26.
The light/color of fireworks is caused by electrons emitting energy as they move from lower to higher energy levels.
a)
move from lower to higher energy levels.
b)
collide with the nucleus.
c)
collide with other electrons.
d)
move from higher to lower energy levels.
27.
When all the electrons in an atom are in orbitals with the lowest possible energy, the atom is in its ____________________ state.
a)
excited
b)
ground
c)
free
d)
floor
28.
The difference between a sample of heavy water and regular water is that a hydrogen atom in heavy water has an extra ____________________.
a)
electron
b)
proton
c)
neutron
d)
fountain
29.
Which statement about subatomic particles is true?
a)
Protons and electrons have almost the same mass
b)
Protons and electrons have opposite charges.
c)
like protons and electrons, neutrons have a charge.
d)
Protons and neutrons have the same charge.
30.
Which statement best describes the process by which an electron in an atom emits light energy?
a)
an electron continuously emits light as it moves in its energy level
b)
An electron absorbs light as it moves from a lower energy level to a higher energy level
c)
An electron releases light energy as it moves from a higher energy level to a lower energy level
d)
An electron emits light energy as regular intervals as more electrons join its energy level
31.
Who is responsible for the model of the atom where electrons travel in specific paths or orbits around the nucleus?
a)
Einstein
b)
Bohr
c)
Planck
d)
Dalton
32.
True or False: Electrons are considered stable at their ground state.
a)
TRUE
b)
FALSE
33.
As an electron falls down into its ground state it....
a)
absorbs energy
b)
releases energy
34.
Light is emitted when an electron moves from the ________ state to the _________ state
a)
excited, ground
b)
ground, excited
35.
an electron moves ___________ the nucleus when it moves to its excited state
a)
towards
b)
away from
c)
inside
d)
around
36.
A single orbital in any level can only hold _______ electrons.
a)
2
b)
4
c)
6
d)
8
37.
Which type of subatomic particles have the LEAST amount of mass?
a)
protons
b)
electrons
c)
neutrons
d)
nucleus
38.
What type of subatomic particles are found in the cloud?
a)
neutrons
b)
electrons
c)
protons
d)
reactions
39.
How are electrons arranged in an atom?
a)
In groups of five
b)
In energy levels
c)
By color
d)
By shape
40.
What tool would you use to study space?
a)
microscope
b)
telescope
c)
pliers
41.
This is what the experimenter is manipulating or changing in the experiment.
a)
Independent Variable
b)
Dependent Variable
c)
Constants
d)
Results
42.
This term describes what is produced in a chemical reaction.
a)
compounds
b)
chemicals
c)
reactants
d)
products
43.
What type of bond forms between a metal and a nonmetal?
a)
covalent
b)
metallic
c)
ionic
d)
reaction
44.
How do you increase the surface area of an alkaline seltzer tablet?
a)
Heat it
b)
Crush it
c)
Leave it whole.
d)
Freeze it.
45.
What type of bond is shown in the picture?
a)
synthetic
b)
metallic
c)
ionic
d)
covalent
46.
Which family/group of elements has a full set of valence electrons and is completely nonreactive?
a)
Alkali Metals
b)
Noble Gases
c)
Transition metals
d)
Halogens
47.
Which group contains the most reactive nonmetals?
a)
Group 7
b)
Group 8
c)
Group 1
d)
Group 2
48.
Which term describes matter's ability to transfer heat or electricity?
a)
Malleability
b)
Luster
c)
Conductivity
d)
Color
49.
In the periodic table elements are arranged by
a)
atomic mass
b)
atomic number
c)
valence electrons
d)
number of isotopes
50.
Each row in the periodic table is called a
a)
group
b)
period
c)
cluster
d)
unit
51.
Each column in the periodic table is called a
a)
period
b)
group/family
c)
cluster
d)
unit
52.
Particles in an atom's nucleus that are neutral and have no charge are
a)
megatrons.
b)
electrons.
c)
neutrons.
d)
protons.
53.
A negatively charged particle that moves around the nucleus is a(n)
a)
proton
b)
neutron
c)
electron
d)
quark
54.
Which group/family of the periodic table is composed of inert (not reactive) gases? They are the ones boxed in in red in the picture.
a)
alkali metals
b)
alkaline earth metals
c)
halogens
d)
noble gases
55.
What does the 1.00794 stand for?
a)
Hydrogen
b)
atomic number
c)
atomic mass
d)
atomic explosion
56.
The blue elements are called
a)
metals
b)
nonmetals
c)
metalloids
d)
noble gases
57.
The atoms along the staircase are called
a)
metals
b)
nonmetals
c)
metalloids
d)
noble gases
58.
An isotope is the same element with a different number of...?
a)
Protons
b)
Neutrons
c)
Electrons
59.
Which of the following is NOT a property of metals?
a)
conductive
b)
malleable
c)
lustrous
d)
brittle
60.
If a material can easily be drawn into the shape of a wire, it is
a)
Ductile
b)
Magnetic
c)
Malleable
d)
Reactive
61.
The number of valence electrons an atom wants to have to be stable
a)
1
b)
4
c)
5
d)
8
62.
One atom shares one or more electrons with one or more atoms
a)
covalent bond
b)
ionic bond
c)
metallic bond
d)
electronic bond
63.
How much energy it takes to remove an electron from an atom
a)
electronegativity
b)
ionization energy
c)
oxidation number
d)
atomic radius
64.
Number of protons an atom has
a)
atomic number
b)
atomic mass
c)
mass number
d)
symbol
65.
Horizontal rows on the periodic table are called
a)
groups
b)
periods
c)
families
d)
bars
66.
Chemical reaction which takes in or absorbs heat energy
a)
endothermic
b)
covalent
c)
exothermic
d)
ionized
67.
Type of reaction in which two or more substances combine to form another substance
a)
synthesis
b)
decomposition
c)
single-replacement
d)
double-replacement
68.
Type of reaction that occurs when one substance breaks down into two or more substances
a)
synthesis
b)
decomposition
c)
single-replacement
d)
double-replacement
69.
Which of the following is NOT one of the 4 states of matter?
a)
solid
b)
gel
c)
plasma
d)
gas
70.
A compost pile in the backyard for the garden is an example of a:
a)
Heterogeneous Mixture
b)
Homogeneous Mixture
c)
Pure Substance
d)
Compound
71.
What would you use to separate iron filings and sand?
a)
Magnet
b)
Filter paper
c)
Dropper
d)
Funnel
72.
Which of the following is true about a homogeneous mixture?
a)
It is always dissolved in water
b)
It is a pure substance
c)
It is uniform throughout
d)
You can see the differences in components if you look closely
73.
True or false: A mixture can be separated by physical means.
a)
True
b)
False
74.
A mathematical representation of an object or event is a
a)
model
b)
variable
c)
control
d)
theory
75.
The main branches of natural science are
a)
physics and chemistry
b)
biology, zoology, and ecology
c)
medicine and agriculture
d)
life, physical, and earth science
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