Chemistry for Health Sciences
Pre-Test Questions
Course Introduction
Chemistry for Health Sciences provides an introduction to the fundamental principles of chemistry with a focus on their application in health and life sciences. The course covers key topics such as the structure of atoms and molecules, chemical bonding, states of matter, solutions, acids and bases, and chemical reactions, all tailored to biological and medical contexts. Emphasis is placed on understanding biochemical processes, the role of nutrients and drugs in the body, and essential laboratory techniques relevant to health science professionals. This course equips students with foundational chemical knowledge crucial for further studies in nursing, pharmacy, and allied health fields.
Recommended Textbook
Introductory Chemistry 4th Edition by Nivaldo J. Tro
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19 Chapters
1962 Verified Questions
1962 Flashcards
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Chapter 1: The Chemical World
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Sample Questions
Q1) The properties of water do not depend on how the atoms are bonded together in the molecule.
A)True
B)False
Answer: False
Q2) What is the definition of a scientific theory?
A)a brief statement that summarizes past observations and predicts future ones
B)a model that explains the underlying reasons for observations and laws
C)the equivalent of a scientific opinion which others may disagree with D)a method of learning that emphasizes reason as the way to understand the world
E)none of the above
Answer: B
Q3) Molecules are responsible for scattering light which causes the colors of the sunset. A)True
B)False
Answer: True
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Page 3
Chapter 2: Measurement and Problem Solving
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Sample Questions
Q1) Suppose a boat engine leaks 938 milliliters of oil into a lake.The mass of this spilled oil is 823 grams.The oil will not mix with the lake water.Which statement is true?
A)The oil will sink because its density of 0.877 g/mL is greater than the density of water.
B)The oil will float because its density of 0.877 g/mL is less than the density of water.
C)The oil will sink because its density of 1.14 g/mL is greater than the density of water.
D)The oil will float because its density of 1.14 g/mL is less than the density of water.
E)none of the above
Answer: B
Q2) The correct number of significant figures in the number 865,000 is:
A)3
B)6
C)4
D)ambiguous
E)none of the above
Answer: D
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Chapter 3: Matter and Energy
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Sample Questions
Q1) Temperature is defined as the transfer of thermal energy caused by a temperature difference.
A)True
B)False
Answer: False
Q2) Matter is defined as anything that is visible to the human eye.
A)True
B)False
Answer: False
Q3) If a particular process is endothermic,the reverse process must be a (an)
A)chemical change.
B)isothermal process.
C)exothermic process.
D)endothermic process.
E)none of the above
Answer: C
Q4) Electrical energy is associated with the flow of electrical charge.
A)True
B)False
Answer: True
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Chapter 4: Atoms and Elements
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Sample Questions
Q1) J.J.Thomson discovered the existence of protons.
A)True
B)False
Q2) How many protons and electrons are present in O<sup>2</sup><sup>-</sup>?
A)8 protons and 8 electrons
B)10 protons and 8 electrons
C)8 protons and 10 electrons
D)16 protons and 8 electrons
E)none of the above
Q3) If two atoms each contain different numbers of protons,the atoms must be from different elements.
A)True
B)False
Q4) Ernest Rutherford proved the existence of electrons.
A)True
B)False
Q5) Protons and electrons each have a mass of 1 amu.
A)True
B)False
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Chapter 5: Molecules and Compounds
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Sample Questions
Q1) SO<sub>2</sub> is an ionic compound.
A)True
B)False
Q2) What is the formula mass of sulfurous acid?
A)82.08 amu
B)98.08 amu
C)83.09 amu
D)66.08 amu
E)none of the above
Q3) Carbon dioxide is an example of a molecular compound.
A)True
B)False
Q4) Choose the pair of names and formulas that do NOT match.
A)copper(I)nitrate: CuNO<sub>3</sub>
B)copper(II)nitride: Cu<sub>3</sub>N<sub>2</sub>
C)copper(II)nitrate: Cu(NO<sub>3</sub>)<sub>2</sub>
D)copper(II)nitrite: Cu(NO<sub>2</sub>)<sub>2</sub>
E)all of these are correct
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Page 7
Chapter 6: Chemical Composition
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Sample Questions
Q1) A 42.7 gram sample of potassium nitrate contains how many grams of potassium?
A)39.1
B)16.5
C)21.4
D)8.54
E)none of the above
Q2) What is the mass of 3.91 x 10<sup>24</sup> sulfur atoms?
A)208
B)4.93
C)155
D)32.07
E)none of the above
Q3) A compound has a molar mass of 180.15 g/mol.Given the following percent composition,calculate the molecular formula:
A)CH<sub>3</sub>O<sub>2</sub>
B)CH<sub>2</sub>O
C)C<sub>3</sub>H<sub>6</sub>O<sub>3</sub>
D)C<sub>6</sub>H<sub>12</sub>O<sub>6</sub>
E)none of the above
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Page 8
Chapter 7: Chemical Reactions
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Sample Questions
Q1) What are the coefficients for the following reaction when it is properly balanced? ___nitric acid + ___sodium hydroxide ___sodium nitrate + ___water
A)2,1,1,1
B)2,3,2,2
C)5,2,2,1
D)1,1,1,1
E)none of the above
Q2) When the equation __NO<sub>2</sub> + __H<sub>2</sub>O + __O<sub>2</sub> __HNO<sub>3</sub> is balanced,the coefficient of HNO<sub>3</sub> is A)2.
B)3.
C)4.
D)5.
E)none of the above
Q3) A net ionic equation shows all ionic species that are present in solution.
A)True
B)False
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Chapter 8: Quantities in Chemical Reactions
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Sample Questions
Q1) How many grams of NO<sub>2</sub> are theoretically produced if we start with 1.20 moles of S and 9.90 moles of HNO<sub>3</sub>?
Reaction: S<sub> </sub>+ 6HNO<sub>3 </sub> H<sub>2</sub>SO<sub>4</sub> + 6NO<sub>2</sub> + 2H<sub>2</sub>O
A)7.20
B)331
C)455
D)786
E)not enough information
Q2) The actual yield is the amount of product actually produced by a chemical reaction. A)True
B)False
Q3) The primary source for the rising carbon dioxide levels is respiration of the Earth's growing population.
A)True
B)False
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10
Chapter 9: Electrons in Atoms and the Periodic Table
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Sample Questions
Q1) Which of the following elements has the lowest ionization energy?
A)Rb
B)Na
C)C
D)F
E)He
Q2) Which subshell letter corresponds to a 4-leaf clover orbital pattern?
A)s
B)p
C)d
D)f
E)not enough information
Q3) When neon light is passed through a prism,what is observed?
A)continuous spectrum
B)nothing
C)bright spots or lines
D)white light
E)none of the above
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11
Chapter 10: Chemical Bonding
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Sample Questions
Q1) Having eight valence electrons is very stable and is called an octet.
A)True
B)False
Q2) When you have 2 electron groups and none are lone pairs,the molecular geometry is linear.
A)True
B)False
Q3) Lewis theory predicts that the formula for a compound between fluorine and calcium is:
A)CaF
B)Ca<sub>2</sub>F
C)CaF<sub>2</sub>
D)CaF<sub>3</sub>
E)none of the above
Q4) The elements with the highest electronegativity values tend to be found in the:
A)upper right-side of the periodic table.
B)lower right-side of the periodic table.
C)upper left-side of the periodic table.
D)lower left-side of the periodic table.
E)center of the periodic table.
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Chapter 11: Gases
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Sample Questions
Q1) If you had a five liter balloon of argon gas and a five liter balloon of xenon gas,and you removed 10 grams of gas from each balloon,the balloons would both shrink down to the same size.
A)True
B)False
Q2) What is the initial temperature of a gas if the volume changed from 1.00 L to 1.10 L and the final temperature was determined to be 255.0°C?
A)480°C
B)-41°C
C)232°C
D)207°C
E)none of the above
Q3) What is the final volume (L)of a 1.00 L system at 315 K and 1.10 atm if STP conditions are established?
A)1.05
B)0.935
C)1.50
D)0.953
E)none of the above
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Page 13
Chapter 12: Liquids,solids,and Intermolecular Forces
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Sample Questions
Q1) A mothball can change directly from its solid phase to its gaseous phase.This process is known as:
A)deposition.
B)melting.
C)condensation.
D)sublimation.
E)none of the above
Q2) Without intermolecular forces,solids and liquids would not exist and all matter would be gaseous.
A)True
B)False
Q3) The change of a substance from a liquid to a gaseous form is called:
A)dynamic equilibrium.
B)heat of fusion.
C)condensation.
D)vaporization.
E)volatile.
Q4) Intermolecular forces are the attractive forces between atoms within a compound. A)True
B)False
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Chapter 13: Solutions
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Sample Questions
Q1) A 0.15 M solution of BaCl<sub>2</sub> contains:
A)0.15 M Ba<sup>2</sup><sup>+</sup> ions and 0.15 M Cl<sup>-</sup> ions.
B)0.15 M Ba<sup>2</sup><sup>+</sup> ions and 0.30 M Cl<sup>-</sup> ions.
C)0.30 M Ba<sup>2</sup><sup>+</sup> ions and 0.15 M Cl<sup>-</sup> ions.
D)0.30 M Ba<sup>2</sup><sup>+</sup> ions and 0.30 M Cl<sup>-</sup> ions.
E)none of the above
Q2) After you have completed the task of diluting a solution,which statement below must be TRUE?
A)The new solution has more volume but has a lower concentration than before.
B)The new solution has more volume but has a higher concentration than before.
C)The new solution has less volume but has a lower concentration than before.
D)The new solution has less volume but has a higher concentration than before.
E)none of the above
Q3) A solution contains 100.0 g water,10.0 g NaCl,and 15.0 g methanol.What is the weight percent of methanol in the solution?
A)8.00%
B)10.0%
C)12.0%
D)15.0%
E)none of the above
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Chapter 14: Acids and Bases
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Sample Questions
Q1) What is the concentration of H in 0.50 M hydroiodic acid?
A)0.50 M
B)1.0 M
C)<0.50 M
D)1.50 M
E)none of the above
Q2) The main component of vinegar is acetic acid.
A)True
B)False
Q3) A strong acid is one that is very concentrated.
A)True
B)False
Q4) What is the concentration of hydronium ions in a solution given that the concentration of hydroxide ions is 2.31 × 10<sup>-</sup><sup>4</sup> M?
A)4.33 × 10<sup>-</sup><sup>11</sup> M
B)2.31 × 10<sup>10</sup> M
C)2.31 × 10<sup>-</sup><sup>18</sup> M
D)1.01 × 10<sup>-</sup><sup>5</sup> M
E)none of the above
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Chapter 15: Chemical Equilibrium
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Sample Questions
Q1) Consider the reaction: 2 N<sub>2</sub>O(g) O<sub>2</sub> (g)+ 2 N<sub>2</sub> (g).Which of the following will cause a shift in the equilibrium to the left?
1.Remove N<sub>2</sub>O
2.Remove O<sub>2</sub>
3.Add N<sub>2</sub>
A)1 and 2 only
B)1 and 3 only
C)2 and 3 only
D)All of 1,2,and 3
E)Neither 1,2,or 3
Q2) Which statement below is FALSE?
A)The rate of a reaction can be increased by increasing concentrations of reactants.
B)The rate of a reaction can be increased by altering the temperature.
C)The rate of a reaction can be increased by adding a catalyst.
D)A catalyst alters the equilibrium constant.
E)All of the above are true.
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Chapter 16: Oxidation and Reduction
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Sample Questions
Q1) Reduction typically involves:
A)the loss of electrons.
B)the gain of oxygen.
C)the gain of electrons.
D)the gain of water.
E)none of the above
Q2) What is the oxidation state of the underlined element in the compound: H<sub>2</sub>SO<sub>4</sub>?
A)+1
B)+2
C)-2
D)+6
E)+4
Q3) Suggest two methods to reduce corrosion of a metal such as iron and briefly explain how each method works.
Q4) A galvanic cell is a spontaneous electrochemical cell.
A)True
B)False
Q5) Distinguish between a galvanic (voltaic)cell and an electrolytic cell.
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Chapter 17: Radioactivity and Nuclear Chemistry
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Sample Questions
Q1) When an atom emits an alpha particle,it becomes a different element.
A)True
B)False
Q2) The emitted particle with the mass of an electron but carrying a 1+ charge is named the
A)proton.
B)proelectron.
C)positron.
D)plusion.
E)none of the above
Q3) Atomic nuclei whose atomic number is greater than which element are considered to be radioactive?
A)Uranium
B)Radium
C)Barium
D)Bismuth
E)Lead
Q4) Antoine-Henri Becquerel discovered X-rays.
A)True
B)False
Page 19
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Chapter 18: Organic Chemistry
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Sample Questions
Q1) The reaction CH<sub>2</sub>=CH<sub>2</sub> + H<sub>2</sub>
CH<sub>3</sub>CH<sub>3</sub> would best be described as:
A)substitution.
B)combustion.
C)addition.
D)hydrogenation.
E)none of the above
Q2) Which of the following statements about carbon is FALSE?
A)Carbon must always have four bonds.
B)Carbon can bond to itself.
C)Carbon can have either a tetrahedral,trigonal planar or linear geometry.
D)Carbon can form into linear,branched and cyclic compounds.
E)none of the above
Q3) Alkynes are compounds with at least one triple bond.
A)True
B)False
Q4) All organic molecules contain carbon but not all carbon compounds are organic compounds.
A)True
B)False
Page 20
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Chapter 19: Biochemistry
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Sample Questions
Q1) The nonpolar part of a phospholipid is repelled by water and is said to be hydrophilic.
A)True
B)False
Q2) The portion of the cell that contains the genetic information is called:
A)cytoplasm.
B)membrane.
C)nucleus.
D)mitochondria.
E)none of the above
Q3) Enzymes that act as catalysts are called proteins.
A)True
B)False
Q4) All of the carbohydrates below are hexoses EXCEPT: A)glucose.
B)fructose.
C)galactose.
D)both A and B
E)Glucose,fructose and galactose are all hexoses.
Q5) What is the difference between saturated and unsaturated fatty acids?
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