WorksheetsChemistry
Total questions: 100
Worksheet time: 1hrs 29mins
Name
Class
Date
1.
what is the independent variable on the graph
a)
x
b)
y
c)
x axis
d)
y axis
2.
What is a independent variable
a)
a variable that changes
b)
a variable that doesn't change
3.
When experimenting with the growth of a plant, a scientist uses three (of the same type of) plants, two different fertilizers, equal light, and equal water. What type of variable is the fertilizer?
a)
Dependent
b)
Independent
c)
Control
4.
Is hammering wood together to build a house a chemical or physical change?
a)
chemical
b)
physical
5.
Is burning wood a chemical or physical change?
a)
chemical
b)
physical
6.
Is melting butter for popcorn a chemical or physical change?
a)
chemical
b)
physical
7.
Is spoiled meat a chemical or physical change?
a)
chemical
b)
physical
8.
Is sour milk a chemical or physical change?
a)
chemical
b)
physical
9.
The dependent is on the - axis
a)
x
b)
y
c)
Y axis
d)
X axis
10.
Is pouring milk in your oatmeal a physical or chemical change?
a)
physical
b)
chemical
11.
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
12.
What is a chemical property of this water?
a)
It reacts with pottasium
b)
It is a gas
c)
It is a solid
d)
It is made up of sodium and chlorine
13.
What is happening to the water on the glass?
a)
Condensation
b)
Deposition
c)
Sublimation
d)
Evaporation
14.
What state of matter has the lowest amount of energy, and stays in one place?
a)
Solid
b)
Gas
c)
liquid
d)
Plasma
15.
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
16.
All of the following are physical properties of matter EXCEPT
a)
mass
b)
color
c)
melting point
d)
ability to rust
17.
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
18.
The Law of Conservation of Mass states that during a chemical reaction, total mass is
a)
created
b)
the same
c)
destroyed
d)
utilzied
19.
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
20.
Which of the following represents a compound?
a)
H
b)
H-3
c)
H2O
d)
O-16
21.
What is the state of matter?
(hint: not the person)
(hint: not the person)
a)
Gas
b)
Plasma
c)
Liquid
d)
Solid
22.
Which of the following is the BEST example of a solution?
a)
Italian dressing
b)
trailmix
c)
orange juice (with pulp)
d)
seawater
23.
Which of the following CANNOT be classified as a substance?
a)
table salt
b)
air
c)
nitrogen
d)
gold
24.
A homogeneous mixture where one of the substances is dissolved in the other.
a)
solution
b)
compound
c)
precipitate
d)
evaporate
25.
Which of the following is a heterogeneous mixture?
a)
air
b)
salt water
c)
steel
d)
soil
26.
Which of the following substances is an element?
a)
baking soda
b)
iron
c)
salt
d)
sugar
27.
Which of the following is a homogeneous mixture?
a)
salt water
b)
beef stew
c)
sand and water
d)
soil
28.
Which of the following is a compound?
a)
sodium
b)
sea water
c)
carbon dioxide
d)
brass
29.
To separate a mixture of salt and water what separation method is used?
a)
Filtration
b)
Distillation
c)
Chromatography
d)
Evaporation
30.
To separate a mixture of soil and water what separation method is used?
a)
Filtration
b)
Distillation
c)
Chromatography
d)
Evaporation
31.
To separate a mixture of soil and water what separation method is used?
a)
Filtration
b)
Distillation
c)
Chromatography
d)
Evaporation
32.
Boiling point,melting point, and density are some of an element's
a)
pure properties
b)
physical properties
c)
chemical properties
33.
An element's ability to react with acid is an example of a
a)
physical property
b)
melting point
c)
chemical property
34.
When two or more elements join together chemically,
a)
a mixture is formed
b)
nothing is formed
c)
a compound is formed
35.
Elements that are shiny and conduct heat and electric current are___________.
a)
nonmetals
b)
metalloids
c)
metals
36.
Elements that are poor conductors of heat are __________.
a)
metals
b)
metalloids
c)
nonmetals
37.
Elements with properties of metals and nonmetals are ___________.
a)
metals
b)
nonmetals
c)
metalloids
38.
A solution is another name for what type of mixture?
a)
homogeneous
b)
heterogeneous
39.
Density is...
a)
the amount of mass in an object
b)
the amount of space an object takes up
c)
the amount of mass in a given space
d)
the weight of an object
40.
What units can be used to express density?
a)
g/mL
b)
grams
c)
millimeters
d)
milliliters
41.
A solution is another name for what type of mixture?
a)
homogeneous
b)
heterogeneous
42.
Frank has a paper clip. It has a mass of 9g and a volume of 3cm3. What is its density?
a)
3 g/cm3
b)
1/3 g/cm3
c)
27 g/cm3
d)
39 g/cm3
43.
Which box has a higher density?
a)
Box A
b)
Box B
c)
cannot be determined
d)
they are the same
44.
Adding sugar & water to create a mixture, what is the solute in this example?
a)
sugar
b)
water
c)
sugar water
45.
Chicken noodle soup is an example of what type of mixture?
a)
homogeneous
b)
heterogeneous
46.
What is another term for the columns on the periodic table?
a)
groups
b)
periods
c)
compartments
47.
What family has 7 electrons in the outer most shell
a)
alkali metals
b)
alkaline earth metals
c)
halogens
d)
nobel gases
48.
What is the mass of an electron
a)
1 AMU
b)
1/1836 AMU
c)
5 AMU
d)
10 AMU
49.
What is the charge of a proton?
a)
neutral
b)
negative
c)
positive
d)
no charge
50.
How many protons and electrons does the ion N3- have?
a)
7, 7
b)
7, 9
c)
10, 7
d)
7, 10
51.
Lithium - 8 has how many neutrons?
a)
3
b)
4
c)
5
d)
6
52.
Fluorine gains one electron. What is the ion?
a)
F+
b)
F-
c)
F2-
d)
F2+
53.
An isotope with 17 protons and 20 neutrons
a)
Calcium - 17
b)
Calcium - 37
c)
Chlorine - 20
d)
Chlorine - 37
54.
S2- has how many electrons and protons?
a)
14, 12
b)
14, 16
c)
16, 18
d)
18, 16
55.
This group has two valence electrons.
a)
Alkali Metals
b)
Alkali Earth Metals
c)
Lactinides
d)
Oxygen Family
56.
Aluminum is this type of element.
a)
Metal
b)
Metalloid
c)
Non-Metal
57.
Isotopes have the same number of protons, but a different number of ________________.
a)
Quarks
b)
Electrons
c)
Neutrons
d)
Photons
58.
Which particle has a similar mass to a proton?
a)
Electron
b)
Neutron
c)
Photon
d)
Marble
59.
Who discovered the electron?
a)
Democritus
b)
Dalton
c)
Thomson
d)
Rutherford
60.
How many electrons can be held in the 4th shell?
a)
2
b)
8
c)
8
d)
18
61.
What is atomic number 11?
a)
Lithium
b)
Calcium
c)
Sodium
d)
Neon
62.
How many protons does Carbon have?
a)
3
b)
4
c)
5
d)
6
63.
This scientist discovered that the atom was mostly empty space.
a)
Democritus
b)
Dalton
c)
Thomson
d)
Rutherford
64.
Which of the following is the correct name for MgCl2?
a)
magnesium chlorine
b)
magnesium dichlorine
c)
magnesium chloride
d)
magnesium dichloride
65.
Which is most likely to form a negative ion?
a)
an element from group 17
b)
a metal
c)
an element from group 1
d)
an element with atoms that have eight valence electrons
66.
Ions that are made of more than one atom are called
a)
ionic compounds
b)
crystals
c)
polyatomic atoms
d)
ionic bonds
67.
When an atom loses a valence electron, it becomes a(n) _____________ ion.
a)
positive
b)
negative
c)
neutral
d)
polyatomic
68.
Metalloids are most likely to _____________ valence electrons in order to have a stable arrangement.
a)
lose
b)
gain
c)
gain or share
d)
lose or share
69.
What is the correct name for K2S?
a)
potassium sulfur
b)
potassium sulfide
c)
potassium sulfate
d)
potassium sulfite
70.
Negative ions form when atoms _________ valence electrons.
a)
lose
b)
gain
c)
share
d)
gain or share
71.
What is the correct name for MgO?
a)
magnesium oxygen
b)
magnesium oxate
c)
magnesium oxide
d)
magnesium oxite
72.
Which of the following is NOT a polyatomic ion?
a)
NH4+
b)
HCO3-
c)
Ca2+
d)
SO42-
73.
How many valence electrons does Chlorine (Cl) have?
a)
1
b)
3
c)
6
d)
7
74.
How many energy shells does Aluminum (Al) have?
a)
2
b)
3
c)
4
d)
1
75.
What is a valence electron?
a)
An electron in the highest occupied energy level of an atom
b)
An electron that has properties similar to a transition metal
c)
Electrons with high reactivity
d)
Noble gases
76.
How do the following two elements bond together?
Pb4+ O2-
Pb4+ O2-
a)
PbO
b)
Pb2O3
c)
PbO2
d)
Pb3O2
77.
How do the following two elements bond together?
Al3+ O2-
Al3+ O2-
a)
AlO
b)
Al2O3
c)
Al3O6
d)
Al3O2
78.
How do the following two elements bond together?
K1+ S2-
K1+ S2-
a)
KS
b)
K8S
c)
K6S3
d)
K2S
79.
What does the nucleus consist of?
a)
Protons + Electrons
b)
Neutrons + Electrons
c)
Atoms
d)
Protons + Neutrons
80.
Isotopes are what?
a)
Small atoms
b)
everything
c)
Atoms with the same mumber of protons but different numbers of neutrons
d)
All of the above
81.
What is distillation?
a)
Separation technique for homogeneous mixtures that is based on the differences in boiling points of substances
b)
Separation technique for homogeneous mixtures that results in the formation of pure solid particles from a solution containing the desolved substance
c)
Technique that used a porous barrier to separate a solid from a liquid in a heterogeneous mixture
d)
None of the above
82.
The period for Bromine is ___________.
a)
3
b)
2
c)
4
83.
Beryllium is in group number______.
a)
Group 2
b)
Group 3
c)
Group 4
d)
Group 7
84.
What is the name of the group that never reacts--ever ever they are stable with a full outermost ring!!!
a)
noble gases
b)
transition
c)
halogens
d)
borons
85.
The sum of the number of protons and neutrons in an atom is the mass number.
a)
true
b)
false
86.
Elements on the far right side of the periodic table are classified as nonmetals.
a)
true
b)
false
87.
Horizontal rows of the periodic table are called
a)
clusters
b)
families
c)
groups
d)
periods
88.
What scientist is best known for his gold foil experiment?
a)
J.J. Tomson
b)
Ernest Rutherford
c)
John Dalton
d)
Democritus
89.
How many protons are in an atom with an atomic number of 20, an atomic mass of 45, and a charge of +2?
a)
20
b)
10
c)
2
d)
18
90.
Atomic Number: 12
Mass Number: 25
Charge: 0
Mass Number: 25
Charge: 0
a)
Normal Atom
b)
Isotope
c)
Cation
d)
Anion
91.
Atomic Number: 26
Neutrons: 30
Electrons: 25
Neutrons: 30
Electrons: 25
a)
Normal Atom
b)
Isotope
c)
Anion
d)
Cation
92.
Neutrons: 42
Electrons: 36
Element: Arsenic
Electrons: 36
Element: Arsenic
a)
Normal Atom
b)
Isotope
c)
Anion
d)
Cation
93.
What is the name of this polyatomic ion? NH4+
a)
Chlorate
b)
Nitrate
c)
Nitrite
d)
Ammonium
94.
What is the name of this polyatomic ion? NO2-
a)
Nitride
b)
Nitrate
c)
Nitrite
d)
Ammonium
95.
What is the name of this polyatomic ion? OH-
a)
Hydroxide
b)
Cyanide
c)
Ammonium
d)
Peroxide
96.
How many significant figures does the following number have: 0.998005
a)
9
b)
10
c)
6
d)
5
97.
How many significant figures does the following number have: 0.0046
a)
2
b)
3
c)
5
d)
6
98.
How many significant figures does the following number have: 1740200
a)
2
b)
1
c)
3
d)
5
99.
Which of the following is correct scientific notation?
a)
20.35 x 104
b)
.2035 x 104
c)
2035 4
d)
2.035 x104
100.
Express the following in scientific notation:
.000457
.000457
a)
457 x 106
b)
457 x 10-6
c)
4.57 x104
d)
4.57 x 10-4
100 %
