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WorksheetsChemistry 2020 Semester 1 Overview Test Review
Total questions: 100
Worksheet time: 2hrs 40mins
Which is an image of a beaker?
Which is an image of a graduated cylinder?
Which is an image of a hot plate?
Which is an image of a digital balance?
Which is an image of a thermometer?
Which is an image of a glass stirring rod?
Which is an image of a test tube?
Which is an image of a beaker tongs?
Which is an image of a weigh boat?
What do we use to measure the volume of a liquid?
beaker
test tube
graduated cylinder
erlenmeyer flask
What do we use to measure the mass of an object?
hot plate
digital balance
bunsen burner
ruler
What is pictured here?
meniscus
beaker
the bottom of a graduated cylinder
that one thing
When measuring volume we want to measure to the bottom of what in a graduated cylinder?
glass
the number 10
the meniscus
the pipette
Select all that apply:
When you are going to use a piece of glassware what should you do?
Check for chips in the rim
Check for cracks in the rim and walls of the piece
Check for cracks in the bottom of the piece
Make sure it won't electrocute you.
If you do not understand a direction or part of a lab procedure, you should
figure it out as you do the lab.
try several methods until something works.
ask the instructor before proceeding.
skip it and go on to the next part.
After completing an experiment, all chemical wastes should be
left at your lab station for the next class.
disposed of according to your instructor’s directions.
dumped in the sink.
taken home.
You are heating a substance in a test tube. Always point the open end of the tube
toward yourself.
toward your lab partner.
toward another classmate.
away from all people.
When gathering glassware and equipment for an experiment, you should
read all directions carefully to know what equipment is necessary.
examine all glassware to check for chips or cracks.
clean any glassware that appears dirty.
All of the above.
All chemicals in the lab are to be considered dangerous.
True
False
You should return all unused chemicals to their original containers.
True
False
Your work areas should be kept clean and tidy.
True
False
SI Units
the SI base unit of mass
A set of base units used by the international scientific community.
the SI base unit for length
non SI unit commonly used for volume
Line Graph
a special chart that uses pie slices to show relative sizes of data based on percentages.
a type of chart used to show information that changes over time. Line graphs use several points connected by straight lines.
a diagram in which the numerical values of variables are represented by the height or length of lines or rectangles of equal width.
A graph of plotted points that show the relationship between two sets of data
Bar Graph
a special chart that uses pie slices to show relative sizes of data based on percentages.
a type of chart used to show information that changes over time. Line graphs use several points connected by straight lines.
a diagram in which the numerical values of variables are represented by the height or length of lines or rectangles of equal width.
A graph of plotted points that show the relationship between two sets of data
Liter
the SI base unit of mass
A set of base units used by the international scientific community.
the SI base unit for length
non SI unit commonly used for volume
Meter
the SI base unit of mass
A set of base units used by the international scientific community.
the SI base unit for length
non SI unit commonly used for volume
Kilogram
the SI base unit of mass
A set of base units used by the international scientific community.
the SI base unit for length
non SI unit commonly used for volume
Independent Variable
a variable (often denoted by x ) whose variation does not depend on that of another. It is the one variable that is changed by the experimenter.
a variable (often denoted by y ) whose value depends on that of another. It is the variable that is often measured by the experimenter.
an experiment where the scientist only changes 1 variable at a time and everything else is kept the same.
a group of subjects in an experiment that has no variables changed in it. This allows for a comparison between nothing changing and the independent variable changing.
Dependent Variable
a variable (often denoted by x ) whose variation does not depend on that of another. It is the one variable that is changed by the experimenter.
a variable (often denoted by y ) whose value depends on that of another. It is the variable that is often measured by the experimenter.
an experiment where the scientist only changes 1 variable at a time and everything else is kept the same.
a group of subjects in an experiment that has no variables changed in it. This allows for a comparison between nothing changing and the independent variable changing.
I want to know if low strength bleach, medium strength bleach, or maximum strength bleach will get Heinz ketchup stains out of white T-shirts the best. What is the variable in this experiment?
the type of stain
the strength of the bleach
the color of shirt
the brand of ketchup
At what temperature did bread mold the slowest?
20
40
60
80
At what temperature did bread mold the fastest?
100
40
60
20
Convert 17 m to cm:
0.17 cm
0.017 cm
1,700 cm
170 cm
Convert 5 mm to cm:
5,000 cm
0.5 cm
0.05 cm
50 cm
1000 grams = _____ kilograms
0.0001
1,000,000
10
1
42 L = ___mL
4,200
.0042
4.20
42,000
Which of the following is the symbol kilogram?
kg
k
g
kL
The abbreviation for milliliters is ________.
mL
cL
mm
L
Benzene is a compound that is highly flammable. What is this an example of?
Physical property
Chemical property
Physical change
Chemical change
Mercury is a metal that is liquid at room temperature. What is this an example of?
Physical property
Chemical property
Physical change
Chemical change
Physical properties....
change the matter when studied
can be observed and measured without changing the matter being studied
include the ability to burn and rust
are useless unless studied in a lab
What word describes the relationship between the mass of a material and its volume?
Volume
Weight
Height
Density
Energy
the property of matter and radiation which is the capacity to perform work
the quantity (amount) of matter in something
the amount of space something takes up.
any property that is measurable without changing the chemical identity of the substance.
Mass
the property of matter and radiation which is the capacity to perform work
the quantity (amount) of matter in something
the amount of space something takes up.
any property that is measurable without changing the chemical identity of the substance.
Volume
the property of matter and radiation which is the capacity to perform work
the quantity (amount) of matter in something
the amount of space something takes up.
any property that is measurable without changing the chemical identity of the substance.
Chemical Properties
Some change in the state or form of matter that does not change the chemical properties of the substance.
a reaction that results in a change in the chemical properties of a substance. Meaning a new substance has been created
any of a material's properties that becomes evident during, or after, a chemical reaction
any property that is measurable without changing the chemical identity of the substance.
Extensive Properties
a type of physical property of matter that changes as the amount of matter changes
a reaction that results in a change in the chemical properties of a substance. Meaning a new substance has been created
a type of physical property of matter that stays the same despite the amount of matter there is.
any property that is measurable without changing the chemical identity of the substance.
Intensive Properties
a type of physical property of matter that changes as the amount of matter changes
a reaction that results in a change in the chemical properties of a substance. Meaning a new substance has been created
a type of physical property of matter that stays the same despite the amount of matter there is.
any property that is measurable without changing the chemical identity of the substance.
Which is an example of a physical change?
A chemical going from solid to liquid
Formation of bubbles when two chemicals are put together
A piece of copper grows a coat of silver when put into a solution
A substance catching fire
Which is an example of a chemical change?
A chemical going form a liquid to a solid
A chemical going from a solid to a gas
Bending a piece of wire until it breaks
The formation of bubbles when two chemicals are put together.
The relationship between the mass m of a material, its volume V, and its density D is
D = mV.
D = V/m.
D = m/V.
D = m + v.
If I have 10 grams(g) of water with the volume of 10 millilitres (mL) what is the density of the water?
1 g/mL
10 g/mL
.1 g/mL
100 g/mL
Mercury metal is poured into a graduated cylinder that holds exactly 22.5 mL. The mercury used to fill the cylinder weighs 306.0 g. From this information, calculate the density of mercury.
13.6 g/ml
6885 g/ml
0.074 g/ml
22.5 g/ml
An atom is
the smallest unit of matter that maintains its chemical identity.
the smallest unit of a compound.
always made of carbon.
smaller than an electron.
A nuclear particle that has about the same mass as a proton, but with no electrical charge, is called a(n)
nuclide.
neutron.
electron.
isotope.
An atom is electrically neutral because
neutrons balance the protons and electrons.
nuclear forces stabilize the charges.
the numbers of protons and electrons are equal.
the numbers of protons and neutrons are equal.
The atomic number of oxygen, 8, indicates that there are eight
protons in the nucleus of an oxygen atom.
oxygen nuclides.
neutrons outside the oxygen atom's nucleus.
energy levels in the oxygen atom's nucleus.
All atoms of the same element have the same
atomic mass.
number of neutrons.
mass number.
atomic number.
The average atomic mass of an element is the calculated average of the atomic masses of its
naturally occurring isotopes.
two most abundant isotopes.
radioactive isotopes.
artificial isotopes.
An aluminum isotope consists of 13 protons, 13 electrons, and 14 neutrons. Its mass number is
13.
14.
27.
40.
Chlorine has atomic number 17 and mass number 35. It has
17 protons, 17 electrons, and 18 neutrons.
35 protons, 35 electrons, and 17 neutrons.
17 protons, 17 electrons, and 52 neutrons.
18 protons, 18 electrons, and 17 neutrons.
What is the relative charge of an electron?
+1
-1
0
-2
The number of atoms in 1 mol of carbon is
6.022 x 1022.
6.022 x 1023.
5.022 x 1022.
6.22 x 1023.
Scientific notation is a way to
express very large or very small numbers and still be able to do math with them.
express a scientific theory
notate the number of experiments done
an exercises is annoying me and making me do yet more math
What element has the atomic number 10
Helium
Neon
Argon
Krypton
Carbon has an average atomic mass of
14.00674
12.011
10.811
210
The element with the chemical symbol of B is
Boron
Bromine
Beryllium
Bakerstreet
What is the relative charge of an proton?
+1
-1
0
-2
What is the relative charge of an neutron?
+1
-1
0
-2
When matter is a gas what does its atoms look like?
When matter is a liquid what does its atoms look like?
When matter is a solid what does its atoms look like?
Which state of matter has both a definite volume and definite shape?
Solid
Liquid
Gas
Plasma
Which state of matter has a definite volume and no definite shape?
Solid
Liquid
Gas
Plasma
Which state of matter has no definite volume and no definite shape?
Solid
Liquid
Gas
Plasma
How would you express 10,000 in scientific notation?
1 x 105
1 x 104
1 x 103
1.0000
How would you express 555,000,000,000 in scientific notation?
5.55 x 1011
555 x 109
5.55 x 10-11
5.55 x 109
How would you express .00000000001 in scientific notation?
1 x 1011
1 x 10-11
.00000000001
1 x 1010
What subatomic particle(s) would be found orbiting the nucleus?
Neutrons only
Electrons only
Protons and Neutrons
Protons and Electrons
Which subatomic particles contribute the most to the mass of an atom?
Protons, Neutrons, Electrons
Protons only
Protons and Electrons
Protons and Neutrons
Proton
Positively charged particle in the nuclei of an atom that contributes to the mass to the atom
Neutral particle in the nuclei of an atom that contributes to the mass to the atom
Negatively charged particle that revolves around the nucleus does not contribute mass to the atom.
a helium nucleus emitted by some radioactive substances, originally regarded as a ray.
Neutron
Positively charged particle in the nuclei of an atom that contributes to the mass to the atom
Neutral particle in the nuclei of an atom that contributes to the mass to the atom
Negatively charged particle that revolves around the nucleus does not contribute mass to the atom.
a helium nucleus emitted by some radioactive substances, originally regarded as a ray.
Electron
Positively charged particle in the nuclei of an atom that contributes to the mass to the atom
Neutral particle in the nuclei of an atom that contributes to the mass to the atom
Negatively charged particle that revolves around the nucleus does not contribute mass to the atom.
a helium nucleus emitted by some radioactive substances, originally regarded as a ray.
Average atomic mass
one of the distinct forms in which matter can exist (Solid, Liquid, Gas, Plasma)
the sum of the masses of its isotopes, each multiplied by its natural abundance.
found on the periodic table at the top of chemical symbols, it represents the number of protons in the nucleus of an atom of that element.
Total number of protons and neutrons in the nucleus of an atom of an element.
Atomic number
one of the distinct forms in which matter can exist (Solid, Liquid, Gas, Plasma)
the sum of the masses of its isotopes, each multiplied by its natural abundance.
it represents the number of protons in the nucleus of an atom of that element.
Total number of protons and neutrons in the nucleus of an atom of an element.
What is the mass of one mole of Chlorine atoms (Cl) in grams?
35.47
35
187
35.453
What is the mass of one mole of Sodium atoms (Na) in grams?
22.989707
11
187.56981
22
Freezing is a heat ____________ process.
loss
gain
Melting is a heat __________ process.
gain
loss
An element has an atomic number of 7 and a mass number of 16. How would you write the name of this isotope?
Sulfur-7
Nitrogen-7
Sulfur-16
Nitrogen-16
An element has an atomic number of 53 and 52 neutrons. How would you write the name of this isotope?
Tellurium-105
Iodine-105
Tellurium-53
Iodine 105
The natural abundance for boron isotopes is 19.9% B-10 and 80.1% B-11 . Calculate boron’s atomic mass.
10
10.801
5
1080.1
Hydrogen is 99% Hydrogen-1, 0.8% Hydrogen-2, and 0.2% Hydrogen-3. Calculate its average atomic mass.
1.012
1.000000794
4
101.2
