WorksheetsFINAL EXAM=End of Year (EOY) Chemistry
Total questions: 50
Worksheet time: 1hrs 11mins
What would be the appropriate graph for the following data set?
line graph
bar graph
scatter plot
histogram
What would be the appropriate graph for the following data set?
line graph
bar graph
pie chart
histogram
The ratio of mass and volume of a substance is its:
density
length
weight
chemical formula
When designing new things, engineers need to consider:
cost efficiency
environmental concerns
location
all of the above
Surface tension is caused by:
cohesion
adhesion
capillary action
specific heat
In an atom, _____ are found in the nucleus, and _______ are found orbiting the nucleus.
protons; neutrons
neutrons; electrons
protons and neutrons; electrons
electrons; protons and neutrons
Ice expands compared to liquid water because of the forces from:
adhesion
hydrogen bonds
heat
air pressure
Neutrons need to be in the nucleus because:
the create a buffer between the positive charges
they need to add weight
they are negatively charged and attract protons
they are bigger than protons
The atomic number of an atom represents:
# of protons only
# of electrons only
# of protons and electrons (if atom is neutral)
# of protons, electrons, and neutrons
The gram formula mass of NaCl is 58.44g. If you have 4.5 moles of NaCl, what is the mass of this compound?
26.29 g
0.077 g
12.99 g
262.98g
Rank the elements from smallest to largest atomic radius. Br, O, Ca, Ba
Br, O, Ca, Ba
O, Br, Ca, Ba
Ca, Ba, O, Br
O, Ca, Br, Ba
How many molecules are in 257 g of CaCl2?
(mass of calcium chloride is 110.98g)
2.32 molecules
1.39 x 1024 molecules
1.39 x 1023 molecules
1.71 x 1028 molecules
Which periodic group has the valence configuration of s2p4?
Group 2 or 2A
Group 14 or 4A
Group 16 or 6A
Group 18 or 8A
Group 17 elements are the most reactive of the nonmetal elements because they
require only one electron to fill their outer energy level.
have the highest ionization energies.
have the largest atomic radii.
are the farthest to the right in the periodic table.
Which of the following compounds does not contain a polyatomic ion?
sodium carbonate
sodium sulfate
sodium sulfide
sodium chlorate
To balance a chemical equation, you may adjust the
coefficients
subscripts
formulas of the products
either the coefficients or the subscripts
Which is the mole ratio for the equation 6Li + N2 --> 2Li3N is correct?
6 mol Li: 6 mol Li3N
6 mol Li: 1 mol N2
2 mol Li3N: 3 mol Li
1 mol N2: 3 mol Li
For the reaction below, how many moles of N2 are required to produce 18 mol of NH3?
N2 + 3H2 --> 2NH3
4.5
9.0
18
36
According to the law of conservation of mass, the total mass of the reacting substances is
always more than the total mass of the products
always less than the total mass of the products
sometimes more and sometimes less than the total mass of the products
always equal to the mass of the products
Which of the following is the correct name for Fe3(SO4)2?
iron (III) sulfate
Iron sulfate
iron (II) sulfate
Iron (V) sulfate
The molecular formula for acetylene is C2H2. The molecular formula for benzene is C6H6. The empirical formula is
C2H2
C6H6
CH
(CH)2
Between which two atoms are ionic bonds most likely to form? (Draw electron-dot structures to help you decide)
K and F
O and O
C and H
N and O
Lewis structures use dots to depict valence electrons. For the following elements, what pattern in the corresponding Lewis dot structures can you identify?
Lead (Pb) Antimony (Sb) Sulfur (S) Chlorine (Cl)
the dot structure for each contains the same number of outer electrons
the number of outer electrons increases by 2 for each element
the number of outer electrons increases by 1 for each element
the number of outer electrons corresponds to the total number of electrons in each element
The alkaline earth metals are found in group 2 of the periodic table. Which alkaline earth metal has the highest ionic radius based on its location on the periodic table?
Berryllium (Be)
Calcium (Ca)
Magnesium (Mg)
Radium (Ra)
Which element has the noble gas configuration [Kr]5s24d2?
Se
Zr
Sr
Ti
How many moles of oxygen are consumed if 8 moles H2 are used?
How many grams of hydrogen are produced if 120 g of Na are available?
How many grams of potassium chloride can be produced from 356 g of chlorine and 356 g of potassium bromide?
What is the molar mass of B2(CO3)3?
81.632 g/mol
94.842 g/mol
38.822 g/mol
201.648 g/mol
An acid has a pH
higher than 7
lower than 7
7
greater than 14
the H in pH stands for
hood
happy
hydrogen
help
bleach is
an acid
a base
lemon juice is a
acid
base
acids taste
bitter
sour
furry
bases taste
bitter
sour
like candy
if you add an acid to a base what will happen?
BOOM
it will neutralize
it wont mix
Do acids and bases conduct electricity?
Only acids conduct electricity
Only bases conduct electricity
Bases and acids conduct electricity
Neither conduct electricity
According to the pH range given in the image,which substance is more acidic than lemon juice?
Hydrochloric acid
Cabbage
Milk
Milk Of Magnesia
Which among the following is not a base?
NaOH
KOH
HCl
NH4OH
Scale that measures how acidic or basic something is.
aH
bH
pH
Hp
A student measures the pressure and volume of an empty water bottle to be 1.4 atm and 2.3 L. She then decreases the pressure to 0.65 atm. What is the new volume?
Use P1V1=P2V2 to solve
2.1 L
5.0 L
8.2 L
3.9 L
A sample of gas containing 8.1 moles at STP would fill a container of what volume?
(STP=standard temperature of 273K and standard pressure of 1atm. R=0.0821 Latm/molK)
Use PV=nRT to solve. n=moles
342 L
703 L
475 L
182 L
A student inflates a balloon with helium then places it in the freezer. The student should expect
the balloon's volume to increase
the balloon's volume to decrease
the balloon's moles to increase
the balloon's moles to decrease
