NEW
Font size
S
M
L
XL
WorksheetsChemistry Review
Total questions: 43
Worksheet time: 1hrs 9mins
Name
Class
Date
1.
Atoms are made of
a)
Protons
b)
Neutrons
c)
Electrons
d)
Protons, nuetrons, and electrons
2.
In the modern periodic table elements are arranged by:
a)
atomic mass
b)
atomic number
c)
valence electrons
d)
number of isotopes
3.
An element's identity is determined by the number of
a)
electrons.
b)
protons.
c)
neutrons.
d)
valence.
4.
All matter is made of .....
a)
energy
b)
atoms
c)
air
d)
chemistry
5.
The atomic number of an element tells the number of _____ in the nucleus of an atom of that element.
a)
protons
b)
neutrons
c)
electrons
d)
isotopes
6.
Most of the mass of an atom is found it its _____.
a)
electron cloud
b)
nucleus
c)
atomic number
d)
empty space
7.
Each is an example of matter except _____.
a)
a cloud
b)
air
c)
a dust particle
d)
a beam of light
8.
Which subatomic particle has a negative charge in the atom?
a)
proton
b)
neutron
c)
electron
d)
quark
9.
Which is an electron?
a)
A
b)
B
c)
C
10.
Which is a proton?
a)
A
b)
B
c)
C
11.
Which is a neutron?
a)
A
b)
B
c)
C
12.
Which item on this element square is the chemical symbol?
a)
Copper
b)
29
c)
Cu
d)
63.546
13.
Which item on this element square represents the atomic number?
a)
13
b)
Al
c)
Aluminum
d)
26.981538
14.
What is the number of protons that the element in this image contain?
a)
14
b)
7
c)
15
d)
18
15.
What is the atomic mass of "F"
a)
9
b)
18
c)
17
d)
19
16.
An atom of the element with atomic number 6 always has _____.
a)
six protons in its nucleus
b)
an atomic mass of six
c)
more than six neutrons
d)
six electron clouds
17.
Each row in a periodic table is called a
a)
Group
b)
Period
c)
Row
d)
Column
18.
Each column in the periodic table is called a
a)
period
b)
group
c)
cluster
d)
unit
19.
The atomic number tells you what?
a)
number of electrons
b)
number of protons
c)
number of neutrons
d)
both electrons and protons added together in an atom.
20.
Which group of the periodic table is composed of inert (not reactive) gases?
a)
alkali metals
b)
alkaline earth metals
c)
halogens
d)
noble gases
21.
Elements which are shiny, conduct electricity and heat are called
a)
metal
b)
nonmetal
c)
metalloid
d)
nonexistent
22.
The atoms along the staircase are called
a)
metals
b)
nonmetals
c)
metalloids
d)
noble gases
23.
Which is an alkali metal?
a)
Magnesium
b)
Iron
c)
Sodium
d)
Europium
24.
How many protons are in this element?
a)
79
b)
196
c)
117
d)
Cannot be determined
25.
How many electrons does potassium K contain? (click to see image)
a)
19
b)
39
c)
20
d)
40
26.
How many neutrons are in a Gold atom?
a)
79
b)
196
c)
118
d)
275
27.
What element is represented in this Bohr Model?
a)
Carbon
b)
Hydrogen
c)
Aluminum
d)
Lithium
28.
What's a valence electron?
a)
electrons in the second energy level
b)
electrons in the outermost energy level
c)
the atomic number
d)
electrons in the first level
29.
What element is this?
a)
Helium
b)
Hydrogen
c)
Argon
d)
Silver
30.
What identifies the element?
a)
Protons
b)
Neutrons
c)
valence electrons
d)
Nucleus
31.
The groups of the period table tell us:
a)
Number of electron shells
b)
Number or electrons
c)
Number of protons
d)
Number of valence electrons
32.
The periods of the periodic table tell us:
a)
Number of valence electrons
b)
Number of electron shells
c)
Number of protons
d)
What's a period?
33.
An gel ice pack getting cold after you put it in the freezer for an hour.
a)
Chemical Change
b)
Physical Change
34.
Which of the following IS a physical change?
a)
Getting a haircut
b)
Rusty metal
c)
sour milk
d)
A compound
35.
What indicates a chemical reaction occurred?
a)
Heat or Light is released
heat or light is produced
heat or light is produced
b)
gas (bubbles) produced
c)
color change
d)
all of the above
36.
1. How is a chemical change different from a physical change?
a)
there is no difference
b)
a physical change creates a new substance
c)
a chemical change creates a new substance
37.
The right side of the equation below is called the
a)
products
b)
reactants
38.
Which of the following is an example of a physical change?
a)
wood burning
b)
ice melting
c)
food digesting
d)
iron rusting
39.
Which of the following is a chemical change?
a)
the rusting of iron
b)
dissolving salt in water
c)
melting an ice cube
d)
bending a copper wire
40.
You use pancake mix, eggs, and milk to make pancakes. Which of these is the product?
a)
the pancake mix
b)
the eggs
c)
the milk
d)
the pancakes
41.
How do chemical reactions turn substances into new substances?
a)
with burning acid
b)
the molecules mix together and create new substances
c)
the atoms break apart and combine back together in new ways
d)
the ionic compounds mix in water to form solutions
42.
The only way you can be certain that a chemical reaction has occured is by?
a)
Light has been emitted
b)
a colour change has occurred
c)
bubbles appear
d)
identifying one or more new chemical products
43.
Why is tearing a piece of paper only a physical change?
a)
It changes the paper.
b)
It is hard to tear.
c)
It only changes its size, but it's still paper
d)
None of the above
Reset
