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WorksheetsUnit B (Chemistry) Study Session
Total questions: 100
Worksheet time: 1hrs 2mins
Name
Class
Date
1.
Which of the following is a chemical property?
a)
color
b)
tendency to rust
c)
mass
d)
density
2.
Which of the following is classified as a metal?
a)
Ge
b)
As
c)
F
d)
V
3.
Aluminum has _ valence electrons.
a)
7
b)
1
c)
6
d)
3
4.
Co (cobalt) and Fe (iron) are both
a)
transition metals
b)
halogens
c)
metalloids
d)
metals
5.
The information in an experiment that describes color, odor, or shape is known as
a)
quantitative data
b)
qualitative data
6.
Density is
a)
grams/mL
b)
mL/grams
c)
mol/liter
d)
psi
7.
Chemical Formulas ...
a)
are written in alphabetical order
b)
represent the destruction or creation of atoms
c)
represent how atoms are arranged in a chemical reaction
8.
A chemical change happens when...
a)
a substance is changed at the atomic level
b)
bonds are broken and formed
c)
a new substance is made
d)
all of the above!
9.
What kind of change is a phase change?
a)
Physical - it's still the same substance
b)
chemical - it's made of chemicals
10.
The compounds and elements that are present at the beginning of a reaction:
a)
reactants
b)
catalyst
c)
products
d)
energy
11.
The compounds or elements present at the end of a reaction
a)
reactants
b)
catalyst
c)
products
d)
energy
12.
What is the law of Conservation of Mass?
a)
A measure of how much mass is created or destroyed.
b)
Mass can neither be created nor destroyed during a chemical reaction.
13.
A balanced chemical equation honors which of the following?
a)
The First Law of Thermodynamics
b)
The Second Law of Thermodynamics
c)
The Law of Conservation of Matter
d)
The Law of Multiple Proportions
14.
Elements in the same family
a)
have the same number of energy levels
b)
have the same number of valence electrons
c)
have identical electronegativity
d)
have the same atomic radii
15.
An atom contains ____ in various energy levels.
a)
protons
b)
neutrons
c)
electrons
16.
The _____ is one kind of particle that makes up the atom and carries a positive charge.
a)
Proton
b)
Electron
c)
Neutron
17.
The ____, such as helium and xenon, are non reactive because they have completely filled outer electron shells
a)
Boron Family
b)
Halogens
c)
Noble Gases
d)
Alkali Metals
18.
The location of electrons around the nucleus of an atom.
a)
Valence Electrons
b)
Outer Level
c)
Octet rule
d)
Energy Levels
19.
Substances made up of two or more elements that cannot be seperated by physical means.
a)
element
b)
Heterogenous Mixture
c)
Homogenous Mixture
d)
compound
20.
The smallest particle of a compound that retains the properties of the compound.
a)
Molecule
b)
Atom
21.
The law of conservation of _____ states that the total mass of the products is equal to the total mass of the reactants
a)
Chemical Equations
b)
Mass
c)
Atoms
22.
Plastics are examples of:
a)
ions
b)
isotopes
c)
polymers
d)
molecules
23.
Occurs when bonds are broken or reformed to make a new substance or substances.
a)
Ionic bond
b)
Covalent bond
c)
Physical change
d)
Chemical Change
24.
Substances that are formed as a result of a chemical reaction.
a)
reactants
b)
products
25.
Anything that has mass and takes up space.
a)
ion
b)
isotope
c)
atom
d)
matter
26.
A metric ruler, graduated cylinder, and beaker are all scientific tools that can be used to find _______.
a)
volume
b)
mass
c)
density
d)
viscosity
27.
A property that describes the relationship between mass and volume.
a)
volume
b)
density
c)
viscosity
d)
matter
28.
A chemical change happens when:
a)
bonds are broken and formed
b)
a new substance is made
c)
all of these!
29.
A phase change is a:
a)
physical change
b)
chemical change
c)
life change
30.
TRUE OR FALSE?
A chemical formula is balanced when the number of atoms for each element is the same on both sides of the arrow.
A chemical formula is balanced when the number of atoms for each element is the same on both sides of the arrow.
a)
TRUE
b)
FALSE
31.
In the compound 2H2, the H stands for
a)
Helium
b)
Hydrogen
c)
Herculineum
32.
In the compound 2H2, the "2" stands for
a)
it's the subscript, it means there are two H bonded together
b)
it means there are "2" many molecules
33.
In the equation below , what are the PRODUCT(S)?
2 H2 + O2 → H2O
2 H2 + O2 → H2O
a)
2 H2 + O2
b)
H2O
34.
In the equation below, what are the reactant(s)?
2 H2 + O2 → H2O
2 H2 + O2 → H2O
a)
H2O
b)
2 H2 + O2
35.
What holds atoms together in a molecule?
a)
densit
b)
gravity
c)
physical bonds
d)
chemical bonds
36.
H20, CO2, and C12H22O11, are all examples of chemical
a)
properties
b)
changes
c)
bonds
d)
formulas
37.
Soil, a salad, and sugar water are all examples of
a)
elements
b)
compounds
c)
mixtures
d)
atoms
38.
One example of a physical change is
a)
burning paper
b)
baking cookies
c)
toasting marshmallows
d)
dissolving salt in water
39.
One example of a chemical change is
a)
filtering a mixture
b)
burning wood
c)
boiling water
d)
crushing a can
40.
Fireworks exploding in the sky and giving off light are an example of an
a)
endothermic change
b)
chemical change
c)
physical change
d)
change is mass
41.
All elements are made of basic particle called a(n)
a)
compounds
b)
mixtures
c)
atoms
d)
molecules
42.
If you heat a liquid and measure the temperature at which it boils, you are measuring a(n):
a)
atomic property
b)
physical property
c)
chemical property
d)
molecular property
43.
If you describe methane as a gas that easily catches fire, you are describing a(n):
a)
state of matter
b)
physical property
c)
chemical property
d)
chemical formula
44.
Which of these statements about a column (family) of the periodic table is true?
a)
The elements have similar characteristics
b)
The elements have a wide range of characterisitcs
c)
The elements have the same atomic number
d)
The elements have the same atomic mass
45.
A(n) _______________is a group of 2 or more atoms held together by a chemical bond.
a)
atom
b)
densit
c)
molecule
d)
element
46.
From an element's location in the periodic table, you can predict:
a)
its properties
b)
its chemical name
c)
its chemical symbol
d)
when it was discovered
47.
Which group contains the most elements?
a)
metalloids
b)
nonmetals
c)
metals
d)
transition metals
48.
What parts of the atom move around the nucleus?
a)
atomic mass units
b)
electrons
c)
protons
d)
neutrons
49.
Fluorine, chlorine, bromine, and iodine are part of a family called
a)
noble gases
b)
metalloids
c)
halogens
d)
alkali metals
50.
Each element consists of one or two letters known as the elements _________.
a)
name
b)
calling
c)
symbol
d)
letters
51.
Which of the following is NOT a clue that a chemical change has occurred?
a)
change in color
b)
production of gas
c)
formation of a precipitate
d)
change in shape
52.
Which of the following is a clue of a chemical change?
a)
iron changes color when heated
b)
gas bubbles form in boiling water
c)
melted wax forms around hot candle
d)
gas forms when vinegar and baking soda are mixed.
53.
Which of the following is a physical change?
a)
sawing a piece of wood in half
b)
burning a piece of wood
c)
rusting of an iron fence
d)
a copper roof changing from red to green
54.
A substance that is made up of only one kind of atom is a(n):
a)
compound
b)
homogeneous mixture
c)
element
d)
solution
55.
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
56.
Where are the metals located at on the periodic table?
a)
To the right of the zigzag/stairstep line.
b)
To the left of the zigzag/stairstep line.
c)
At the bottom of the table.
d)
At the top of the table.
57.
Is melting butter for popcorn a chemical or physical change?
a)
chemical
b)
physical
58.
What is a physical property of this avocado toast?
a)
It is a liquid
b)
It can talk
c)
It is green
d)
it is a gas
59.
A chemical change is DIFFERENT than a physical change because in a chemical change:
a)
chemical are used
b)
molecules do not physically touch
c)
a new substance is formed
d)
the change can be seen
60.
The Law of Conservation of Mass states that during a chemical reaction, total mass is:
a)
created
b)
the same
c)
destroyed
d)
utilzied
61.
What is one DIFFERENCE between a mixture and a compound?
a)
a compound consists of more than one phase
b)
a compound can only be separated into its components by chemical means
c)
a mixture can only be separated into its components by chemical means
d)
a mixture must be uniform in composition
62.
Which of the following represents a compound?
a)
H
b)
H-3
c)
H2O
d)
O-16
63.
Which of the following is the BEST example of a solution?
a)
Italian dressing
b)
trailmix
c)
orange juice (with pulp)
d)
seawater
64.
Boiling point,melting point, and density are some of an element's
a)
pure properties
b)
physical properties
c)
chemical properties
65.
An element's ability to react with acid is an example of a
a)
physical property
b)
melting point
c)
chemical property
66.
When two or more elements join together chemically,
a)
a mixture is formed
b)
nothing is formed
c)
a compound is formed
67.
Elements that are shiny and conduct heat and electric current are___________.
a)
nonmetals
b)
metalloids
c)
metals
68.
Which box has a higher density?
a)
Box A
b)
Box B
c)
cannot be determined
d)
they are the same
69.
___ is the ability of a material to transfer heat and energy.
a)
Ductility
b)
Conductivity
c)
Malleability
d)
Luster
70.
A(n) ___ is one specific molecule that is repeated over and over in the chain of a polymer.
a)
macromolecule
b)
monomer
c)
isomer
d)
polymerase
71.
All polymers are made up of...
a)
monosaccharides
b)
monomers
c)
proteins
d)
None of these
72.
What is a monomer?
a)
Many molecules linked together
b)
A large complex polymer
c)
A single molecule
d)
A macromolecule
73.
In an experiment the numerical data is known as
a)
quantitive data
b)
qualitative data
74.
What is a polymer?
a)
Many molecules linked together
b)
A macromolecule
c)
A single molecule
d)
A monomer
75.
How many total atoms are in a molecule of
CuCl2
CuCl2
a)
4
b)
1
c)
3
d)
2
76.
This chemical reaction accurately represents The Law of Conservation of Mass?
a)
True
b)
False
77.
This picture best represents a(n):
a)
Alom
b)
Compound
c)
Element
d)
Molecule
78.
Arrow #2 is pointing at a representation of a(n):
a)
Molecule
b)
Mixture
c)
Atom
d)
Element
79.
This chemical reaction accurately represents The Law of Conservation of Mass?
a)
True
b)
False
80.
#2, which represents the entire picture, can best be described as a(n):
a)
Compund
b)
Atom
c)
Molecule
d)
Polymer
81.
How many elements are represented in the chemical formula below?
H2O2
H2O2
a)
2
b)
4
c)
1
d)
8
82.
How many elements are represented in the chemical formula below?
C2H4O2
C2H4O2
a)
8
b)
2
c)
3
d)
4
83.
How many atoms are represented in the chemical formula below?
C2H6O
C2H6O
a)
3
b)
9
c)
2
d)
6
84.
How many atoms are represented in the chemical formula below?
C12H22O11
C12H22O11
a)
12
b)
22
c)
11
d)
45
85.
Predict which physical property would most likely change if more cross-bonds were added to this polymer.
a)
Color
b)
Temperature
c)
Hardness
d)
Shape
86.
Side #1 in this chemical reaction are called the:
a)
Product(s)
b)
Reactant(s)
87.
Which of the properties on the tables would be considered a CHEMICAL PROPERTY?
a)
Color
b)
Electrical Conductivity
c)
Reaction to Hydrocholric Acid
d)
Density relative to water
88.
A mixture can contain only different types of elements.
a)
True
b)
False
89.
Atoms can physically be combined to form molecule(s).
a)
True
b)
False
90.
A compound can be physically broken down into a single molecule of that compound.
a)
True
b)
False
91.
An atom is the basic unit of all matter.
a)
True
b)
False
92.
This chemical reaction accurately represents The Law of Conservation of Mass?
a)
True
b)
False
93.
In a product's life cycle diagram, every stage has this input.
a)
Waste
b)
Water
c)
Energy
d)
A Landfill
94.
In a product's life cycle diagram, every stage has this output.
a)
Waste
b)
Water
c)
Energy
d)
A Landfill
95.
Using dilution to treat and dispose of toxic waste causes the waste to chemically change.
a)
True
b)
False
96.
Identify an advantage of using dilution as a method of treating and disposing of toxic waste.
a)
It uses very little water.
b)
The chemical reaction that takes place is safe.
c)
The physical change that takes place is safe.
d)
It makes the waste disappear.
97.
Baking soda is added to vinegar in a beaker.
What evidence suggests that a chemical reaction occurred?
What evidence suggests that a chemical reaction occurred?
a)
The mixture became homogeneous.
b)
The mixture remained clear.
c)
It began to fizz.
d)
The mixture evaporated over time.
98.
A solid is mixed with a liquid.
What evidence suggests that a chemical reaction occurred?
What evidence suggests that a chemical reaction occurred?
a)
The mixture did not change color.
b)
The mixture remained clear.
c)
The mixture's temperture increased.
d)
The mixture evaporated over time.
99.
Which provides evidence that matter is conserved in a chemical change?
a)
The number of atoms remains the same throughout a chemical reaction.
b)
The number of atoms changes throughout a chemical reaction.
c)
The mass of the reactants is different than the mass of the products.
100.
During a chemical reaction,
a)
new elements are produced.
b)
atoms are destroyed.
c)
atoms are rearranged.
d)
elements are destroyed.
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