Question 1
(Multiple Choice Worth 2 points)
[08.04]
[removed] increased runoff, driving, discarded oil
[removed] evaporation
, new construction, overpopulation
[removed] waste from wildlife, decaying vegetation, automobiles
[removed] leaking septic and sewer systems, manufacturing, farming
Question 2
(Multiple Choice Worth 2 points)
[05.06]When 5.6 grams of NaCl are dissolved in enough water to create a 125-gram solution, what is the solution’s concentration, expressed as a percent by mass?
[removed] 3.6% NaCl
[removed] 3.8% NaCl
[removed] 4.5% NaCl
[removed] 4.7% NaCl
Question 3
(Multiple Choice Worth 2 points)
[06.04]
[removed] melting
[removed] freezing
[removed] boiling
[removed] sublimation
Question 4
(Multiple Choice Worth 2 points)
[07.02]
[removed] HBr
[removed] NaHCO3
[removed] H2CO3
[removed] NaBr
Question 5
(Multiple Choice Worth 2 points)
[07.05]
[removed] Increasing the rate of the forward reaction will cause a shift to the left.
[removed] Increasing the rate of the reverse reaction will cause a shift to the left.
[removed] Decreasing the rate of the forward reaction will cause a shift to the left.
[removed] Decreasing the rate of the reverse reaction will cause a shift to the right.
Question 6
(Multiple Choice Worth 2 points)
[08.06]
[removed] Insects resistant to the specific pesticide would develop over time.
[removed] The surplus of corn would rot and decay releasing additional greenhouse gases.
[removed] The price of corn would drop dramatically because of a greater supply with no increase in demand.
[removed] Countries able to buy the new corn seeds would see increases in their economy and pollution would rise.
Question 7
(Multiple Choice Worth 2 points)
[07.05]
[removed] The reaction would not be affected.
[removed] The equilibrium would shift to the right.
[removed] The equilibrium would shift to the left.
[removed] The product concentration would equal the reactants.
Question 8
(Multiple Choice Worth 2 points)
[08.01]
[removed] 3.55g
[removed] 1.78g
[removed] 0.888g
[removed] 0.444g
Question 9
(Multiple Choice Worth 2 points)
[05.07]
[removed] 1200 ml
[removed] 2400 ml
[removed] 3750 ml
[removed] 9600 ml
Question 10
(Multiple Choice Worth 2 points)
[08.01]
[removed] Gamma rays have no mass.
[removed] Gamma rays severely damage living cells.
[removed] Gamma rays are high frequency electromagnetic waves.
[removed] Gamma rays are deflected toward the positive terminal in a magnetic field.
Question 11
(Multiple Choice Worth 2 points)
[06.02]
[removed] Activation energy is the same for both endothermic and exothermic reactions.
[removed] Activation energy is greater for endothermic reactions.
[removed] Activation energy is greater for exothermic reactions.
[removed] Activation energy is represented by a negative slope.
Question 12
(Multiple Choice Worth 2 points)
[06.05]
[removed] It lowers the activation energy.
[removed] It increases the collisions per minute.
[removed] It increases the average kinetic energy of the particles.
[removed] It increases the kinetic energy and the collisions per minute.
Question 13
(Multiple Choice Worth 2 points)
[07.02]
[removed] 0.0120 M
[removed] 0.0255 M
[removed] 0.118 M
[removed] 0.510 M
Question 14
(Multiple Choice Worth 2 points)
[07.06]
[removed] NO + 2H2 NH3 + H2O
[removed] NaNO3 + LiF LiNO3 + NaF
[removed] CaSO4 + 2KBr K2SO4 + CaBr2
[removed] AgNO3 + 2HCl AgCl + 2HNO3
Question 15
(Multiple Choice Worth 2 points)
[08.03]
[removed] biofuel and hydro-electric
[removed] natural gas and coal
[removed] nuclear power and geothermal
[removed] geothermal power and biofuel
Question 16
(Multiple Choice Worth 2 points)
[06.04]
[removed] The potential energy of the products is greater than the reactants and the change in enthalpy is positive.
[removed] The potential energy of the products is less than the reactants and the change in enthalpy is positive.
[removed] The potential energy of the products is greater than the reactants and the change in enthalpy is negative.
[removed] The potential energy of the products is less than the reactants and the change in enthalpy is negative.
Question 17
(Multiple Choice Worth 2 points)
[06.01]
[removed] an open system
[removed] an isolated system
[removed] a closed system
[removed] an integrated system
Question 18
(Multiple Choice Worth 2 points)
[07.06]
[removed] +2
[removed] +3
[removed] +6
[removed] +7
Question 19
(Multiple Choice Worth 2 points)
[06.03]
[removed] Lead
[removed] Magnesium
[removed] Iron
[removed] Aluminum
Question 20
(Multiple Choice Worth 2 points)
[05.01]
[removed] A physical change occurs; the particles of the liquid vibrate faster and their kinetic energy increases.
[removed] A physical change occurs; the particles of the liquid vibrate more slowly and their kinetic energy decreases.
[removed] A chemical change occurs; the particles of the liquid vibrate faster and their kinetic energy increases.
[removed] A chemical change occurs; the particles of the liquid vibrate more slowly and their kinetic energy decreases.
Question 21
(Multiple Choice Worth 2 points)
[06.03]
[removed] 564 J
[removed] 2500 J
[removed] 44100 J
[removed] 138000 J
Question 22
(Multiple Choice Worth 2 points)
[08.02]
[removed] It must be spilt with a laser.
[removed] It must be fused to a helium nucleus.
[removed] It must be bombarded it with neutrons.
[removed] It must be shot with light speed electrons.
Question 23
(Multiple Choice Worth 2 points)
[07.01]
[removed] A neutralization reaction occurs.
[removed] Hydronium ion concentration is increased.
[removed] Oxygen gas is produced.
[removed] Hydrogen gas is produced.
Question 24
(Multiple Choice Worth 2 points)
[06.05]
[removed] There are more collisions per minute.
[removed] It increases the distance between the particles.
[removed] It increases the average kinetic energy of the particles.
[removed] It increases the average kinetic energy and there are more collisions per minute.
Question 25
(Multiple Choice Worth 2 points)
[07.04]
[removed] The reactants are all used up.
[removed] All the product is formed.
[removed] The forward and reverse reactions have ceased.
[removed] The forward and reverse reaction rates are the same.
Question 26
(Multiple Choice Worth 2 points)
[08.03]
[removed] Heat energy beneath the Earth’s surface heats underground water into steam.
[removed] Heat from the Earth’s core and pressure transform the remains of dead plants and animals.
[removed] Energy of the sun strikes photovoltaic cells producing a flow of electrons.
[removed] Heat energy is released during nuclear fission and steam is produced to turn a turbine.
Question 27
(Multiple Choice Worth 2 points)
[06.04]
[removed] positive enthalpy change and positive entropy change
[removed] negative enthalpy change and negative entropy change
[removed] positive enthalpy change and negative entropy change
[removed] negative enthalpy change and positive entropy change
Question 28
(Multiple Choice Worth 2 points)
[05.06]
[removed] Water is considered to be a universal solvent.
[removed] Water can only dissolve a limited amount of solute.
[removed] When water freezes, the molecules move farther apart.
[removed] The water in lakes and ponds freezes from the top down.
Question 29
(Multiple Choice Worth 2 points)
[07.04]
[removed] CO2 (g) CO (g) + ½ O2 (g)
[removed] CO2 (g) CO (g) + O2 (g)
[removed] 2 CO2 (g) 2 CO (g) + O2 (g)
[removed] 2CO (g) + O2 (g) CO2 (g)
Question 30
(Multiple Choice Worth 2 points)
[07.06]
[removed] K, because it lost one electron
[removed] K, because it gained one electron
[removed] Cl, because it lost one electron
[removed] Cl, because it gained one electron
Question 31
(Multiple Choice Worth 2 points)
[07.01]
[removed] H+ + H2O H3O+
[removed] H2O H+ + OH-
[removed] H3O+ + OH- 2 H2O
[removed] H2O + NH3 OH- + NH4+
Question 32
(Multiple Choice Worth 2 points)
[05.03]
[removed] -125°C
[removed] 59.5°C
[removed] 273°C
[removed] 332°C
Question 33
(Multiple Choice Worth 2 points)
[08.02]
[removed] They generate power directly from nuclear reactions.
[removed] They supply over 50% of the nation’s power needs.
[removed] Compared to fossil fuels, they require much less fuel.
[removed] They have more atmospheric pollutants compared to fossil fuels.
Question 34
(Multiple Choice Worth 2 points)
[05.08]
[removed] Both the vapor pressure and the boiling point will increase.
[removed] The boiling temperature and the freezing temperature will decrease.
[removed] The freezing temperature will increase and the vapor pressure will decrease.
[removed] The vapor pressure will decrease and the boiling temperature will increase.
Question 35
(Multiple Choice Worth 2 points)
[05.04]
[removed] 0.75 L
[removed] 1.5 L
[removed] 3.0 L
[removed] 6.0 L
Question 36
(Multiple Choice Worth 2 points)
[07.03]
[removed] pH 2
[removed] pH 5
[removed] pH 8
[removed] pH 12
Question 37
(Multiple Choice Worth 2 points)
[06.01]
[removed] The temperature lost by the metal will equal the temperature gained by the water.
[removed] The heat lost by the metal will equal the heat gained by the water.
[removed] The final temperature will be 60°Celsius.
[removed] The final temperature will be more than 60°Celsius.
Question 38
(Multiple Choice Worth 2 points)
[08.05]
[removed] Carbon 12 is radioactive.
[removed] Carbon can form long chains and rings.
[removed] Carbon will bond with other carbon atoms.
[removed] Carbon will readily bond with hydrogen and oxygen.
Question 39
(Multiple Choice Worth 2 points)
[07.03]
[removed] pH = 1.45
[removed] pH = 1.93
[removed] pH = 2.12
[removed] pH = 3.07
Question 40
(Multiple Choice Worth 2 points)
[05.03]
[removed] 0.496 mol
[removed] 0.882 mol
[removed] 1.13 mol
[removed] 6.45 mol
Question 41
(Multiple Choice Worth 2 points)
[08.04]
[removed] Not enough of society knows the harmful nature of fossil fuels.
[removed] Cost effective alternatives are not yet ready to replace fossil fuels.
[removed] Alternative fuels offer just as many environmental problems as fossil fuels.
[removed] The demand for alternative fuels cannot be met by current manufacturers.
Question 42
(Multiple Choice Worth 2 points)
[05.01]
[removed] gas
[removed] liquid
[removed] plasma
[removed] solid
Question 43
(Multiple Choice Worth 2 points)
[05.05]Which of the following would be the best technique to use in order to separate a liquid from a solution?
[removed] chromatography
[removed] evaporation
[removed] filtration
[removed] simple distillation
Question 44
(Multiple Choice Worth 2 points)
[06.02]
[removed] endothermic
[removed] exothermic
[removed] decomposition
[removed] synthesis
Question 45
(Multiple Choice Worth 2 points)
[06.04]
[removed] 6CO2 (g) + 6H2O (l) C6H12O6 (s) + 6O2 (g)
[removed] 2NH3 (g) N2 (g) + 3H2 (g)
[removed] N2O4 (g) 2NO2 (g)
[removed] 2H2O2 (aq) 2H2O (l) + O2 (g)
Question 46
(Multiple Choice Worth 2 points)
[08.05]
[removed] The key difference is that diamonds have other elements bonded within their structure.
[removed] The differences are explained by the number of covalent and ionic bonds within each substance.
[removed] The differences are explained by the density: graphite is very high and diamond is much lower.
[removed] The differences are explained by how the carbon atoms within each substance are covalently bonded together.