Worksheets2025 Final Exam Review
Total questions: 45
Worksheet time: 23mins
How many moles of aluminum oxide are needed to react completely with 4.0 mol of aluminum? (Hint: 2 step DA)
2Al(s) + 3FeO(s) → 3Fe(s) + Al2O3(s)
6.0 mol
2.0 mol
9.0 mol
2.7 mol
Which of the following will NOT increase the solubility of potassium nitrate solid in water?
Increase agitation
Decrease surface area
Increase surface area
Increase temperature
What is the shape and polarity of water?
linear and nonpolar
bent and nonpolar
bent and polar
linear and polar
Which is the correct formula for a compound containing Mg2+?
Mg3O2
MgO
Mg(F2)2
Mg2N3
How many grams are in 4.9 moles of H2O?
0.29 grams
94 grams
88 grams
0.31 grams
What is the percent of calcium in calcium chloride, CaCl2?
Ca = 40.08 g/mol, Cl = 35.45 g/mol
57%
75%
36%
53%
Which of the following elements would be a poor conductor of heat and electricity?
silver Ag
bromine Br
copper Cu
aluminum Al
What is the molar mass of Na2CO3?
106 g
83 g
84 g
72 g
Which of the following formulas represents a polar covalent compound - 2 nonmetals, unsymmetrical molecule?
CF4
CO2
NH3
ZnO
Which picture illustrates a homogeneous mixture composed of the ions of an ionic compound dissolved completely in polar water?
What type of compound is silver nitrate, AgNO3?
ionic
metallic
nonpolar covalent
polar covalent
The equation below shows the decomposition of lead nitrate.
How many grams of oxygen gas are produced when 11.5 g NO2 are formed?
(4 steps DA) 2Pb(NO3)2(s) → 2PbO(s) + 4NO2(g) + O2(g)
4.88 g
4.00 g
2.88 g
2.00 g
Which of these would you expect to be soluble in the water?
oil
sugar
chewing gum
CS2, carbon disulfide, a nonpolar solvent
What is the empirical formula of a compound that is 57% sulfur and 43% oxygen by weight?
SO3
SO2
SO
S2O3
Which of the following is the correct name for the formula, K3PO3?
potassium phosphate
tripotassium nitrogen tetroxide
potassium phosphite
potassium phosphide
Which of the following is insoluble? Use the solubility rules below.
AgC₂H₃O₂
Ag₂CO₃
KI
KNO₃
What are the coefficients that will balance the skeleton equation below?
Al₂(SO₄)₃ + NaOH → Al(OH)₃ + Na₂SO₄
1, 6, 3, 2
1, 6, 2, 3
1, 3, 3, 1
2, 3, 1, 3
When an acid reacts with an base, what compounds are formed? Example: HCl + NaOH →
water and a base
hydrogen and an ionic salt
a salt and water
a salt and an acid
If X is the symbol for an element, which of the following symbols are isotopes of the same element?
Which of the following electromagnetic waves has the highest energy?
A: radio waves
B: ultraviolet light waves
C: violet visible light waves
D: X rays
A student dissolves 40. g of potassium hydroxide in water. As the solute dissolves, the temperature of the mixture increases by 30.0 °C. How do we characterize this change?
physical
ionic
chemical
decomposition
How many protons, electrons, and neutrons does an atom with atomic number 11 and mass number 23 contain?
A: 12 protons, 11 electrons, 23 neutrons
B: 11 protons, 11 electrons, 11 neutrons
C: 12 protons, 11 electrons, 12 neutrons
D: 11 protons, 11 electrons, 12 neutrons
If 175 mL of 6.00 M HCl is mixed with distilled water to make a 500. mL aqueous solution, what is the molarity of the dilute solution? M1V1 = M2V2
2.10 M
17.1 M
14600 M
325 M
What is the correct name for the P3- ion?
phosphate ion
phosphoric ion
phosphite ion
phosphide ion
What is the correctly balanced equation for the reaction of
carbon + oxygen → carbon dioxide?
2C + O → C2O
C + O2 → CO2
2C + 2O → 2CO
C2 + 2O2 → 2OC2
Select the correct formula for dinitrogen pentoxide.
N2O4
N2O3
N2O5
N4O2
Which of the following describes an unsaturated solution?
Added solute will dissolve and will crystallize.
Added solute will dissolve with stirring.
Added solute causes crystallization.
Added solute will not dissolve.
What is the most common charge on the aluminum ion?
3+
5+
3-
5-
What is the molarity of this acid: 0.80 moles are contained in a solution with a volume of 400. milliliters. Molarity = mol/Liters
2.0 M
0.20 M
0.0020 M
500. M
How many moles are present in 56.0 grams of CH₄?
899 g
4.66 g
3.49 g
0.286 g
Which of the electron dot structures correctly illustrates diatomic nitrogen with a triple bond?
Choose the correct Dot diagram for KCl. One formula is correct even though it lacks brackets on the ions.
What are the respective coefficients needed to balance the equation below? N2 (g) + H2 (g) → NH3 (g)
1, 1, 1
1, 2, 3
1, 3, 2
3, 3, 2
What is the proper coefficient for balancing oxygen in the complete combustion of butane shown in the equation below?
2 C4H10 + ? O2 → 8 CO2 + 10 H2O
4
5
6.5
13
What is the molecular shape of a CCl4 molecule?
bent
linear
tetrahedral
trigonal planar
What types of elements form a covalent bond?
nonmetal and nonmetal that share electrons
nonmetal and nonmetal that transfer electrons
metal and nonmetal that transfer electrons
metal and nonmetal that share electrons
Which of the following is a decomposition reaction?
CaCO3(s) ↔ CaO(s) + CO2(g)
4Al(s) + 3O2(g) → 2Al2O3(s)
Mg(s) + 2HCl(aq) → H2(g) + MgCl2(aq)
2C4H10(g) + 13O2(g) → 8CO2(g) + 10H2O(g)
What type of reaction is 2Al(s) + 3FeO(s) -> 3Fe(s) + Al2O3(s)?
Single replacement
Double replacement
Decomposition
Synthesis
Combustion
Which accurately describes how sodium reacts?
Sodium gains 1 electron to form a -1 ion.
Sodium loses 1 electron to form a +1 ion.
Sodium loses 1 electron to form a -1 ion.
Sodium gains 1 electron to form a +1 ion.
What element has the smallest atomic radius?
cesium
bromine
oxygen
sulfur
Which of the following is an ACID and a weak electrolyte when dissolved in water?
HC2H3O2
NaOH
NH4OH
HCl
All of these properties of water are TRUE EXCEPT:
Ionic bonding gives water a high surface tension.
Hydrogen bonding gives water a high surface tension.
Solid water is less dense than liquid water.
Water has a high heat capacity.
What determines the theoretical yield in a chemical reaction?
percent yield
actual yield
limiting reactant
excess reactant
Which of the following compounds are considered an Arrhenius base?
Select TWO correct answers.
NaOH
HNO3
HBr
Ca(OH)2
Which of the following is a property of a base?
taste sour
slippery feel
produces hydrogen gas when reacting with a metal
produces carbon dioxide when reacting with carbonates
