WorksheetsPre-AP Finals Review
Total questions: 25
Worksheet time: 32mins
What is the goal of bonding?
To fulfill the octet rule and have the electron configuration of noble gas atoms.
To fulfill the octet rule and have the electron configuration of halogen atoms.
To have a state of higher energy.
All of the above.
Which of the following would dissolve the most easily in a nonpolar liquid?
NaCl
H2O
KI
CH4
What occurs in order to break the bond in a Cl2 molecule?
Energy is absorbed.
Energy is released.
The molecule creates energy.
The molecule destroys energy
A solid sample of copper is an excellent conductor of electric current. Which type of chemical bonds are in the sample?
ionic bonds
nonpolar covalent bonds
metallic bonds
polar covalent bonds
What is the name of the shape and polarity of a molecule of H2O?
Linear, nonpolar
Bent, polar
Bent, nonpolar
Linear, polar
2Li + Ca(CO3) --> Li2(CO3) + Ca
Using the balanced chemical reaction above, identify the type of reaction occurring.
Synthesis
Single Replacement
Combustion
Decomposition
Given the unbalanced equation:
__Fe2O3 + __CO --> __Fe + __CO2
When the equation is correctly balanced using the smallest whole-number coefficients, what is the coefficient of CO?
1
2
3
4
A chemical reaction is most likely to occur when the colliding particles have the proper
energy and orientation
ionic radii and mass
solubility and density
atomic radii and volume
Increasing the temperature increases the rate of a reaction by
lowering the activation energy between reacting molecules
lowering the frequency of effective collisions
increasing the activation energy
increasing the frequency of effective collisions between reacting molecules
Which equation represents a change that results in an increase in disorder?
I2(s) --> I2(g)
CO2(g) --> CO2(s)
2Na(s) + Cl2(g) --> 2NaCl(s)
2H2(g) + O2(g) --> 2H2O(l)
Is this depicted reaction exothermic or endothermic?
exothermic
endothermic
According to which theory or law is a chemical reaction most likely to occur when two particles with the proper energy and orientation interact with each other?
atomic theory
collision theory
combined gas law
law of conservation of matter
For a reaction system at equilibrium, LeChatelier’s principle can be used to predict the
activation energy for the system
type of bonds in the reactants
effect of a stress on the system
polarity of the product molecules
The average kinetic energy of the particles in a sample of matter is expressed as
density
pressure
volume
temperature
What is the total number of joules required to freeze 15.0 grams of water at STP?
5010 J
20.90 J
-62.8 J
-5010 J
Which letter represents the heat of the reaction?
A
B
C
D
What is the melting point of this substance?
200
150
100
50
What is happening in the line segment BC? (choose all that apply.)
decrease in Kinetic energy
decrease in temperautre
decrease in potential energy
condensation
What is the percent composition by mass NH4HCO3?
79.06 % NH4HCO3
17.72% N, 6.49% H, 15.19% C, 60.71% O
14.07% O, 1.01% H, 12.01% C, and 60.71%O
17.72% N, 5.11% H, 15.19% C, 40.48% O
STP refers to
Standard temperature (0ºC) and pressure (0 atm)
Standard temperature (25ºC) and pressure (0 atm)
Standard temperature (0ºC) and pressure (1 atm)
Standard temperature (100ºC) and pressure (1 atm)
What is the total mass in grams of 0.75 mole of SO2?
32 g
48 g
64.06 g/mol
0.012 g
Actual yield = 62g
Calculate the percent yield.
What is the standard form for a single-replacement reaction?
AX + BY --> AY + BX
A + B --> AB
AB --> A + B
A +BX --> AX + B
Potassium metal is placed in sulfuric acid (H2SO4), what are the products?
K + H2SO4
KH + SO4
K2SO4 + H2
KSO4 + H2
