Chemistry for Life Sciences
Mock Exam
Course Introduction
Chemistry for Life Sciences introduces fundamental chemical principles with a focus on their applications in biological and medical contexts. Students will explore topics such as atomic and molecular structure, chemical bonding, thermodynamics, kinetics, and the properties of solutions and acids/bases, all with an emphasis on understanding biochemical processes. The course highlights the relevance of chemistry to cellular structure, metabolism, genetic information, and physiological functions, preparing students for advanced study in health sciences, molecular biology, and related fields. Laboratory sessions reinforce theoretical concepts through hands-on experiments pertinent to real-life biological systems.
Recommended Textbook
Introductory Chemistry 5th Edition by Nivaldo J. Tro
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19 Chapters
2146 Verified Questions
2146 Flashcards
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Chapter 1: The Chemical World
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59 Verified Questions
59 Flashcards
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Sample Questions
Q1) Which statement would NOT be an example of "quantification"?
A)The newest model of that car gets five more miles per gallon than last year's model.
B)The price of milk went up ten cents per gallon.
C)The average high temperature this July was two degrees higher than last year's average high temperature.
D)The water in the swimming pool feels colder than it was yesterday.
E)none of the above
Answer: D
Q2) Who discovered the law of conservation of mass?
A)John Dalton
B)Antoine Lavoisier
C)Nivaldo Tro
D)John Dalton and Antoine Lavoisier
E)none of the above
Answer: B
Q3) A scientific theory describes the underlying reasons for observations and laws.
A)True
B)False
Answer: True
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Page 3
Chapter 2: Measurement and Problem Solving
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131 Flashcards
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Sample Questions
Q1) If you know the density of a liquid and its volume,the mass of the liquid may be calculated using the equation: m = V/d.
A)True
B)False
Answer: False
Q2) You do not need to write units in calculations as long as you can remember them.
A)True
B)False
Answer: False
Q3) The prefix micro represents the multiplier 0.001.
A)True
B)False
Answer: False
Q4) In the number 48.93,which digit is estimated?
A)4
B)8
C)9
D)3
E)None of the above,all digits are certain.
Answer: D
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Chapter 3: Matter and Energy
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Sample Questions
Q1) Which of the following items is a chemical property?
A)the paint color on a new red Corvette
B)the odor of spearmint gum
C)the melting and boiling point of water
D)the tarnishing of a copper statue
E)none of the above
Answer: D
Q2) What is the value of 335 K on the Celsius temperature scale?
A)62
B)167
C)608
D)66.4
E)none of the above
Answer: A
Q3) Sugar is a pure substance.
A)True
B)False
Answer: True
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Chapter 4: Atoms and Elements
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Sample Questions
Q1) Which one of the following is a main-group element?
A)Ce
B)Co
C)Cu
D)Cs
E)none of the above
Q2) Which statement reflects the results of Rutherford's gold foil experiments?
A)Almost all of the alpha particles were deflected back in the direction from which they came.
B)Almost all of the alpha particles sputtered gold atoms off of the surface of the foil.
C)Almost all of the alpha particles were deflected while passing through the foil.
D)Almost all of the alpha particles passed directly through the foil.
E)none of the above
Q3) The charges on electrons and neutrons cancel each other to give neutral atoms.
A)True
B)False
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6
Chapter 5: Molecules and Compounds
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110 Flashcards
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Sample Questions
Q1) SO<sub>2</sub> is an ionic compound.
A)True
B)False
Q2) What is the name of the molecular compound SO<sub>3</sub>?
A)sulfur oxide
B)sulfur(IV)oxide
C)sulfur trioxide
D)sulfur tetraoxide
E)none of the above
Q3) The ionic compound that forms between aluminum and oxygen is AlO.
A)True
B)False
Q4) The correct name for H<sub>2</sub>SO<sub>3</sub> is sulfurous acid.
A)True
B)False
Q5) The basic unit of an ionic compound is called the formula unit.
A)True
B)False
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Page 7
Chapter 6: Chemical Composition
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Sample Questions
Q1) The numerical value of the mole is defined as being equal to the number of atoms in exactly 12 grams of pure carbon-12.
A)True
B)False
Q2) The molecular formula is equal to the empirical formula multiplied by a whole number integer.
A)True
B)False
Q3) How many moles of potassium are in 156.4 g?
A)39.10
B)4.000
C)0.2500
D)5.050
E)none of the above
Q4) One mole of ammonium nitrite contains:
A)2 moles of nitrogen atoms.
B)4 moles of hydrogen atoms.
C)2 moles of oxygen atoms.
D)All of A,B,and C.
E)None of A,B,and C.
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Chapter 7: Chemical Reactions
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Sample Questions
Q1) Considering the following precipitation reaction: Pb(NO<sub>3</sub>)<sub>2</sub>(aq)+ 2KI(aq) PbI<sub>2</sub>(s)+ 2KNO<sub>3</sub>(aq)
What is the correct net ionic equation?
A)Pb<sup>2+</sup> + I<sub>2</sub><sup>-</sup> PbI<sub>2</sub>(s) B)2NO<sub>3</sub><sup>-</sup> + 2K<sup>+</sup> 2KNO<sub>3</sub> C)Pb<sup>2+</sup> + 2NO<sub>3</sub><sup>-</sup> + 2K<sup>+</sup> + 2I<sup>-</sup> PbI<sub>2</sub>(s)+ 2K<sup>+</sup> + 2NO<sub>3</sub><sup>-</sup> D)Pb<sup>2+</sup> + 2I<sup>-</sup> PbI<sub>2</sub>(s) E)none of the above
Q2) The reaction of carbonate ion with magnesium ion to form solid magnesium carbonate is an example of an oxidation reduction reaction.
A)True
B)False
Q3) A precipitate will form when you mix solutions of potassium chloride and lead nitrate.
A)True
B)False
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9
Chapter 8: Quantities in Chemical Reactions
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Sample Questions
Q1) The conversion factor for moles of carbon dioxide to mass of carbon dioxide is: 1 mole CO<sub>2</sub> 44.01 g.
A)True
B)False
Q2) How many grams of aluminum oxide are produced according to the reaction below given that you start with 10.0 grams of Al and 19.0 grams of O<sub>2</sub>?
Reaction: 4Al + 3O<sub>2</sub> 2Al<sub>2</sub>O<sub>3</sub>
A)40.4
B)5.00
C)0.185
D)18.9
E)not enough information
Q3) Given the following generic equation,2 A + 3B A<sub>2</sub>B<sub>3</sub> H rxn = +444 kJ,if you completely reacted 1 mole of compound A,the amount of heat absorbed would be 222 kJ.
A)True
B)False
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Chapter 9: Electrons in Atoms and the Periodic Table
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Sample Questions
Q1) Consider the electron configuration of the ion to determine which ion shown below has an incorrect ionic charge?
A)Al<sup>3-</sup>
B)Se<sup>2-</sup>
C)Rb<sup>+</sup>
D)Ba<sup>2+</sup>
E)none of the above
Q2) How many valence electrons are in a chlorine atom?
A)1
B)17
C)10
D)7
E)none of the above
Q3) The energy of an electron orbit is quantized.
A)True
B)False
Q4) A particle of light is called a packet.
A)True
B)False
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Chapter 10: Chemical Bonding
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Sample Questions
Q1) Which of the following is considered a single electron group?
A)a lone pair of electrons
B)a single bond
C)a double bond
D)a triple bond
E)all of the above
Q2) Li : is the proper Lewis structure (dot structure)for lithium.
A)True
B)False
Q3) Which molecule below would have a Lewis structure that is an exception to the octet rule?
A)BH<sub>3</sub>
B)NO
C)SI<sub>6</sub>
D)PF<sub>5</sub>
E)all of these
Q4) The VSEPR theory predicts that the angle between the central carbon atom and the two oxygen atoms in CO<sub>2</sub> measures 180°.
A)True
B)False
Page 12
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Chapter 11: Gases
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122 Verified Questions
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Sample Questions
Q1) Hydrogen gas produced in the laboratory by the reaction of zinc and hydrochloric acid was collected over water at 25°C.The barometric pressure at the time was 742.5 mm Hg.What is the pressure of dry hydrogen gas if the vapor pressure of water at 25°C is 23.8 mm Hg?
A)742.5 mm Hg
B)718.7 mm Hg
C)766.3 mm Hg
D)760.0 mm Hg
E)none of the above
Q2) A sample of 0.255 mole of gas has a volume of 748 mL at 28°C.Calculate the pressure of this gas.(R= 0.0821 L atm / mol K)
A)8.42 atm
B)0.784 atm
C)0.00842 atm
D)7.84 × 10<sup>-4 </sup>atm
E)none of the above
Q3) The volume of 9.00 grams of water vapor at STP is 11.2 L.
A)True
B)False
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Page 13
Chapter 12: Liquids,solids,and Intermolecular Forces
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114 Flashcards
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Sample Questions
Q1) Which state of matter has a low density and is easily compressed?
A)solids
B)liquids
C)gases
D)both solids and liquids
E)none of the above
Q2) Silicon is which type of solid?
A)molecular solid
B)ionic solid
C)covalent atomic solid
D)nonbonding atomic solid
E)metallic atomic solid
Q3) Evaporation is an endothermic process.
A)True
B)False
Q4) The boiling point is the temperature at which the vapor pressure of a solution is equal to the intermolecular forces.
A)True
B)False
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Chapter 13: Solutions
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122 Flashcards
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Sample Questions
Q1) Suppose a vodka martini contains 30% alcohol with the remaining portion of the drink composed of water.What is the solute in this type of martini?
A)water
B)alcohol
C)ice
D)olive
E)none of the above
Q2) A solution is a homogeneous mixture of two or more substances.
A)True
B)False
Q3) A semipermeable membrane allows only half the amount of a substance to pass through it.
A)True
B)False
Q4) Which compound below forms an electrolyte solution when dissolved in water?
A)Cl<sub>2</sub>
B)KOH
C)CH<sub>3</sub>CH<sub>2</sub>OH
D)C<sub>12</sub>H<sub>22</sub>O<sub>11</sub> (sucrose)
E)none of the above
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Chapter 14: Acids and Bases
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Sample Questions
Q1) Acids produce H ions in solution.
A)True
B)False
Q2) A solution that has a pH of 8.5 is considered a weak base.
A)True
B)False
Q3) A buffer solution is all of the following EXCEPT:
A)a solution that resists a change in pH when a base is added.
B)a solution that resists a change in pH when an acid is added.
C)a solution that contains both a weak acid and its conjugate base.
D)a solution that regulates pH because it is such a strong acid or base.
E)All of the above are true.
Q4) Which solution below would be considered the most acidic?
A)2.9 × 10 <sup>-4 </sup>M HCl
B)4.5 × 10 <sup>-5</sup> M HNO<sub>3</sub>
C)1.0 × 10 <sup>-7</sup> M NaCl
D)1.5 × 10 <sup>-2</sup> M KOH
E)none of the above
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Page 16
Chapter 15: Chemical Equilibrium
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Sample Questions
Q1) What happens to the equilibrium constant when a catalyst is added to the reaction mixture?
A)increases
B)decreases
C)does not change
D)varies
E)none of the above
Q2) Reaction rates generally increase as a reaction proceeds.
A)True
B)False
Q3) The rate of a chemical reaction is the amount of reactant that changes to product in a specific amount of time.
A)True
B)False
Q4) Equilibrium involves the ideas of sameness and constancy. A)True B)False
Q5) A catalyst speeds up a chemical reaction as it is being consumed. A)True B)False
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Chapter 16: Oxidation and Reduction
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Sample Questions
Q1) The cathode is the electrode at which reduction occurs.
A)True
B)False
Q2) Cars are being developed that run on hydrogen gas and the only emission is water.
A)True
B)False
Q3) Reduction is the gain of electrons.
A)True
B)False
Q4) Gold metal is found at the bottom of the activity series of metals since it is the most difficult metal to oxidize.
A)True
B)False
Q5) Oxidation and reduction cannot both occur in the same chemical reaction.
A)True
B)False
Q6) The oxidation number of sodium in NaI is +1.
A)True
B)False
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Chapter 17: Radioactivity and Nuclear Chemistry
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Sample Questions
Q1) How does the emission of a gamma particle effect the radioactive atom?
A)The atom has a lower amount of energy.
B)The atomic number decreases.
C)The atomic mass increases.
D)The atom gains energy for further radioactive particle emission.
E)All of the above are true.
Q2) Madam Curie discovered two new elements.
A)True
B)False
Q3) A nuclear reaction typically changes the identity of the element involved.
A)True
B)False
Q4) Which of the following is NOT a type of radioactive emission?
A)alpha rays
B)beta rays
C)gamma rays
D)positrons
E)All of the above are types of radioactive emissions.
Q5) Briefly distinguish between nuclear fission and nuclear fusion.
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Chapter 18: Organic Chemistry
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Sample Questions
Q1) R-O-R is an ether functional group.
A)True
B)False
Q2) A compound named "propanal" would be classified as an: A)alcohol. B)amine.
C)aldehyde.
D)ether.
E)none of the above
Q3) Isomers are compounds with the same structures but different formulas.
A)True
B)False
Q4) Compare a six-carbon open-chain (noncyclic)hydrocarbon alkane,alkene,and alkyne.Which of these compounds would have the fewest number of hydrogen atoms?
A)the alkane
B)the alkyne
C)the alkene
D)all of these have the same number of hydrogen atoms
E)none of these contain hydrogen atoms
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Chapter 19: Biochemistry
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Sample Questions
Q1) The "m" in the term mRNA represents:
A)meta.
B)mini.
C)mitosis.
D)messenger.
E)none of the above
Q2) Which of the following statements is FALSE about polysaccharides?
A)They are long chain structures containing large number of repeating monosaccharide units.
B)Starch,cellulose,and glycogen are polysaccharides.
C)Table sugar is a polysaccharide.
D)They break down to produce monosaccharides during digestion.
E)none of the above
Q3) Which protein structure provides the short-range repeating patterns?
A)Primary Structure
B)Secondary Structure
C)Tertiary Structure
D)Quaternary Structure
E)Pental Structure
Q4) What is the difference between saturated and unsaturated fatty acids?
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