Font size
WorksheetsFall Review Chemistry
Total questions: 170
Worksheet time: 6hrs 32mins
Flammable materials, like alcohol, should never be dispensed or used near
Open Flam
another student
open door
sink
If a laboratory fire erupts, immediately
open the windows
thrown water on the fire
run for the fire extinguisher
notify your instructor
Approved eye protection devices (such as goggles) are worn in the laboratory
only if you don't have corrective glasses
to avoid eye strain
any time chemicals, heat or glasswear are used
to improve your vision
You are heating a piece of glass and now want to pick it up. You should
pour cold water on it
use a rag or paper towel
use tongs
pick up the end that looks cooler
You have been injured in the laboratory (cut, burn, etc.). First you should
visit the school nurse after class
see a doctor after school
tell the science instructor at once
apply firstr aid yourself
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
skip it and go on to the next step
ask the instructor before proceeding
After completing an experiment, all chemical wastes should be
taken home
disposed of according to instructor directions
dumpd in the sink
left at your lab station for the next class
Personal eyeglasses provide as much protection as
safety glasses
splashproof chemical googles
face shield
none of these
In a laboratory, the following should not be worn.
all are correct
dangling jewelry
loose clothing
sandals
Subatomic particles with a negative charge
Electrons
Neutrons
Protons
Quarks
In which way are protons and electrons the same in an atom?
same mass
same number of particles
same charges
Which subatomic particle determines the identity of an element?
protons
neutrons
electrons
Which subatomic particle determines the charge of an atom?
protons
neutrons
electrons
The electron is not included in the calculations for the atomic mass because
It has negative charge
It is located in the outer energy levels of the atom
Its mass is basically zero
It attracts neutral particles
Which of the following has the shortest wavelength?
microwaves
UV rays
Infrared
the color blue
Which of the following has the most energy?
Red
Blue
Green
Violet
Which of the following has the most energy?
X-rays
The color green
Microwaves
ultraviolet
Which of the following has the longest wavelength?
Infrared
The color Indigo
gamma rays
TV
Which of the following has the least amount of energy?
UV rays
The color yellow
infrared
Gamma rays
Which of the following has the shortest wavelength?
Gamma rays
The color blue
AM radio
Infrared
Which of the following has the highest frequency?
TV
Microwaves
the color indigo
ultraviolet rays
Which of the following would have the lowest frequency?
infrared
The color red
X-rays
TV
Which of the following has the lowest energy?
The color yellow
The color blue
The color indigo
The color orange
Which of the following has the lowest frequency?
The color blue
The color green
The color yellow
The color violet
What electron configuration matches an oxygen atom?
1s22s22p63s2, 3p64s23d104p5
1s22s22p4
1s22s22p6
1s22s22p63s23p64s23d1
Identify the Electron Configuration for Aluminum (Al)
1s2 2s2 2p6 3s2 3p1
1s2 2s2 2p6 3s2 3p3
1s2 2s2 2p6 3s2 4p1
What atom matches this electron configuration?
1s22s22p63s23p64s23d10
Zinc
Copper
Nickel
Germanium
What atom matches this electron configuration?
1s22s22p63s2
Neon
Magnesium
Aluminum
Potassium
Valence electrons are located...
inside the nucleus
in outer space
on the outermost orbit of an atom
10
2
8
18
14
4
3
28
This is a correct dot diagram for fluorine (F)
true
false
This is a correct dot diagram for oxygen (O)
true
false
The elements in this group all have 5 valance electrons.
Group 5
Group 15
Group 3
Group 18
What is the correct Lewis Dot Structure for ammonia NH3
Which is the correct molecular structure for carbon dioxide?
Is this the correct structure for CH2O?
Yes
No
Which of the following compounds has only single bonds?
I only
II only
III only
I and III
III and IV
What is the correct structure for BF3?
Option A.
Option B.
Option C.
Option D.
By replacing the element symbol, this could be a diagram of which element?
Li
Al
C
Be
Which image could be a representation of NH3?
A
B
C
On the periodic table, Periods are
Horizontal rows
Vertical columns
The innermost energy level has a maximum of how many electrons?
1
2
6
8
What is this element?
Beryllium (atomic #4)
Boron (atomic #5)
Carbon (atomic #6)
Nitrogen (atomic #7)
How many valence electrons?
2
3
4
5
What group does this element belong to?
1
2
17
18
How many valence electrons?
2
4
6
8
Which Bohr model represents Neon?
Name the following
Ca3(PO4)2
calcium phosphate
calcium (III) phosphate
tricalcium diphosphate
calcium phosphide
Which type of bond transfers electrons?
ionic
covalent
How many total electrons does a sulfide ion have with a -2 charge?
18
16
14
10
MnS
Which of the following is not a diatomic molecule?
Boron
Hydrogen
Nitrogen
Chlorine
What is the molecular formula of the following molecule?
C4H8O2
C2H4O2
C4H4O2
C1H2O
Which label shows hydrogen bond in between water molecule?
X
Y
Z
CHECK ALL THAT APPLY:
Electronegative atoms that are often involved in Hydrogen Bonds.
Nitrogen
Carbon
Oxygen
Fluorine
Calcium
BaF2
Barium (II) Fluoride
Barium Fluorine
Barium Fluoride
Barium difluoride
Chemical formula of lime water is :
CaO
Ca(OH)2
CaCO3
CO2
Silver article turns black when kept in open for a few days due to formation of
H2S
AgS
AgSO4
Ag2S
The reaction in which two compound exchange their ions to form two new compounds is called
displacement reaction
combination reaction
redox reaction
double displacement reaction
The chemical formula of lead sulphate is :
Pb2SO4
Pb(SO4)2
PbSO4
Pb2(SO4)3
7.The equation
Cu + xHNO3 -> Cu(NO3)2 + yNO2 + 2H2O
The values of x and y are
3 and 5
8 and 6
4 and 2
7 and 1
White silver chloride in sunlight turns to :
Grey
Yellow
Remain white
Red
Heating of ferrous sulphate gives which of the following product?
Ferric oxide
Sulphur dioxide
Sulphur trioxide
All the above
These are all models of the same molecule. What would this molecule look like in a chemical/molecular formula?
CH
C4H
CH4
4CH
N2+O2--> _NO
Which equation is balanced?
PbO2 + 2H2
SO2 + H20 --> H2SO4
2Na + 2H2O --> 2NaOH + H2
Mg + __HCl ---> MgCl2 + H2
What law governs the balancing of chemical equations?
Law of Energy
Law of Conservation of Matter/Mass
Law of Gravity
Law of Matter Movement
Balance this equation
_Al +_HCl --> _H2 +_AlCl3
2,6,3,2
it's already balanced
4,12,3,4
2,1,4,5
What are the coefficients that would properly balance this equation?
__Ca + __H2O --> __Ca(OH)2 + __H2
2,1 --> 2,1
1,2 --> 1,1
1,2 --> 2,4
1,2 --> 2,1
What are the coefficients that would properly balance this equation?
__AgNO3 + __H2S --> __Ag2S+ __HNO3
2,1 --> 1,2
1,2 --> 1,1
1,2 --> 1,2
1,2 --> 2,1
What are the coefficients that would properly balance this equation?
__H2 + __S --> __H2S
1,1 --> 1
2,2 --> 2
1,2 --> 1
1,2 --> 2
What are the coefficients that would properly balance this equation?
__Al + __O2--> __Al2O3
4,1 --> 2
4,3 --> 4
3,4 --> 1
4,3 --> 2
Determine the coefficients to make the following equation balanced?
__N2 + __O2--> __NO
1, 1, 1
1, 1, 2
2, 2, 2
1, 2, 2
Determine the coefficients to balance the equation.
__Al +__HCl --> __H2 +__AlCl3
2,6,3,2
it's already balanced
4,12,3,4
2,1,4,5
Balance the the following equation.
__Zn+__HCl -->__ZnCl2 +__H2
1,1,2,1
1,1,1,2
1,2,1,1
2,1,1,1
Mn + _ HNO3 → Mn(NO3)2 + H2
Al(NO3)3 + _ NaOH -> Al(OH)3 + 3 NaNO3
