NEW
Font size
S
M
L
XL
WorksheetsChemistry Pre-Assessment
Total questions: 33
Worksheet time: 46mins
Name
Class
Date
1.
What do we call anything that has mass and takes up space?
a)
science
b)
energy
c)
matter
d)
all of the above
2.
Which of the following is NOT an example of matter?
a)
owls
b)
dust
c)
electricity
d)
water vapor
3.
Which of the following is a type of physical property?
a)
reactivity
b)
flammability
c)
density
d)
none of the above
4.
Which of the following correctly matches the subatomic particle to its charge?
a)
Proton = no charge
Electron= negative
Neutron = positive
Electron= negative
Neutron = positive
b)
Proton = positive
Electron= negative
Neutron = no charge
Electron= negative
Neutron = no charge
c)
Proton = negative
Electron= positive
Neutron = no charge
Electron= positive
Neutron = no charge
d)
Proton = positive
Electron= no charge
Neutron = negative
Electron= no charge
Neutron = negative
5.
What does the nucleus of an atom contain?
a)
protons and neutrons
b)
protons and electrons
c)
electrons and neutrons
d)
only neutrons
6.
Where are negatively charged particles likely to be found in an atom?
a)
nucleus
b)
rungs
c)
electron cloud
d)
throughout the atom
7.
The diagram shows the structure of an atom. What is the name of the item labeled A?
a)
an energy level
b)
neutrons
c)
electrons
d)
protons
8.
The periodic table is arranged ___________________.
a)
in alphabetical order
b)
by the number of neutrons
c)
by symbols
d)
by the atomic number
9.
NaCl is an example of which of the following?
a)
periodic table
b)
common name
c)
chemical formula
d)
chemical name
10.
Chemical symbols located on the periodic table are used to represent ____________________.
a)
elements
b)
equations
c)
reactions
d)
compounds
11.
Which of the following chemical symbols is written correctly?
a)
CU
b)
Cu
c)
cu
d)
cU
12.
How many atoms of sulfur are in H2SO4?
a)
one
b)
four
c)
two
d)
none
13.
How many different types of elements make up H2SO4?
a)
three
b)
two
c)
seven
d)
six
14.
CaCl2 + 2NaHCO3 → CaCO3 2NaCl + H2O + CO2
Which of the compounds below is a product of the above chemical reaction?
Which of the compounds below is a product of the above chemical reaction?
a)
CaCl2
b)
O2
c)
2NaHCO3
d)
CaCO3
15.
How many Sulfur atoms are on the left side of the equation below?
2Al + 3CuSO4 → Al2(SO4) + 3Cu
2Al + 3CuSO4 → Al2(SO4) + 3Cu
a)
one
b)
zero
c)
twelve
d)
three
16.
All elements have a different atomic number. This number is determined by the ____________________________.
a)
size of one atom
b)
number of protons
c)
atomic mass
d)
number of neutrons
17.
The diagram shows a block from the periodic table. The number 15 represents the _________________________.
a)
atomic mass
b)
atomic number
c)
number of neutrons
d)
number of atoms
18.
In the diagram, how many protons would an atom of Phosphorus have?
a)
16
b)
30.97
c)
31
d)
15
19.
In the diagram, what is the atomic mass of Phosphorus?
a)
15
b)
30.97
c)
15.97
d)
31
20.
How many neutrons does Phosphorus have?
a)
16
b)
30
c)
15
d)
31
21.
What do we call two or more different elements that are chemically bonded together?
a)
mixture
b)
proton
c)
atom
d)
compound
22.
What is the smallest unit that a substance can be divided into and still be the same material?
a)
element
b)
molecule
c)
compound
d)
mixture
23.
What are the building blocks of matter?
a)
neutron
b)
atom
c)
isotope
d)
pure substance
24.
Which of the following is a compound?
a)
N
b)
Mg
c)
Cu
d)
CO
25.
What is the most abundant element in Earth's atmosphere?
a)
carbon dioxide
b)
oxygen
c)
nitrogen
d)
hydrogen
26.
Which of the following is an element?
a)
cake batter
b)
oxygen
c)
water
d)
sugar
27.
What is the process by which one or more substances change to produce one or more different substances?
a)
chemical reaction
b)
dissolving
c)
phase change
d)
homogenization
28.
The number of atoms in the reactants must be _________________ to the number of atoms in the product.
a)
greater than
b)
equal to
c)
less than
d)
the opposite of
29.
A chemical symbol is...
a)
A short, easy way to represent a chemical reaction
b)
The large number in front of each compound; represents how many of the compound are present
c)
A shorthand way to represent a compound
d)
An abbreviation that represents an element
30.
A chemical equation is...
a)
An abbreviation that represents elements
b)
A short, easy way to represent a chemical reaction
c)
The little number immediately to the right of each element's symbol in a chemical formula; it represents how many atoms of the element are present
d)
A shorthand way to represent a compound
31.
A chemical formula is...
a)
The little number immediately to the right of each element's symbol in a chemical formula; it represents how many atoms of the element are present
b)
The large number in front of each compound; represents how many of the compound are present
c)
A shorthand way to represent a compound
d)
A short, easy way to represent a chemical reaction
32.
A subscript is...
a)
An abbreviation that represents elements
b)
The large number in front of each compound; represents how many of the compound are present
c)
The little number immediately to the right of each element's symbol in a chemical formula; it represents how many atoms of the element are present
d)
A shorthand way to represent a compound
33.
A coefficient is...
a)
The little number immediately to the right of each element's symbol in a chemical formula; it represents how many atoms of the element are present
b)
A short, easy way to represent a chemical equation
c)
The large number in front of each compound; represents how many of the compound are present
d)
An abbreviation that represents elements
Reset
