QCAA Chemistry Practice Test

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• Cellulose is composed of glucose units in which configuration?
• During the balancing of a redox half-reaction in acidic solution, which action balances the charge after hydrogen and oxygen are balanced?
• If Qc is smaller than Kc, in which direction will the system shift to re-establish equilibrium?
• Bases are
• In thin-layer chromatography, which region would molecules that interact more with the mobile phase travel toward?
• To convert an alkene to a polyalkane, what conditions are necessary?
• What does the equilibrium constant Kc indicate about the system at a given temperature?
• In a Brønsted-Lowry reaction, what happens to a base that gains a proton?
• What is reduction?
• To form an alcohol from an alkene via hydration, which conditions are used?
• In thin-layer chromatography, which region would molecules with higher attraction to the stationary phase lie closer to?
• Which statement best describes esterification?
• Monosaccharides can contain either of these groups?
• If pressure is decreased in a system with different numbers of gas molecules on each side, which statement is true?
• Haloalkanes are generally what state at room temperature?
• Secondary structure is stabilized by hydrogen bonds between backbone atoms, leading to alpha helices and beta sheets. This statement describes which level of protein structure?
• What best defines a galvanic cell?
• At equilibrium, Kc equals Qc. What does this indicate about the relationship between Kc and Qc?
• What best describes an open system?
• Which statement is true about conjugate bases?
• Which statement best describes the relationship between intermolecular forces and boiling point?
• To convert an alkene to a haloalkane, which reagent is required?
• Tertiary structure is stabilized by interactions between which parts of the polypeptide?
• Why do carboxylic acids have high boiling points compared with hydrocarbons of similar molecular weight?
• Which hydrogen-containing group acts as a hydrogen bond donor in alcohols?
• What is the end point of a titration?
• Carbonyl compounds tend to have relatively high boiling points compared with hydrocarbons because of which intermolecular interaction?
• Diprotic acid
• Which has the higher boiling point, n-butanol or diethyl ether?
• For Kc greater than 1, which side is favoured at equilibrium?
• Atom economy is best described as which of the following?
• Which representation corresponds to a haloalkane?
• If a molecule has high IMFs and a high boiling point, would you expect it to be highly volatile?
• Which group is represented by RCN?
• What condition is necessary to form an amide from an amine and a carboxylic acid?
• What characterizes addition polymerization?
• Conjugate acid is
• If Qc > Kc, which statement is true about the system's composition and direction?
• Which statement best describes a monoprotic acid?
• How can you tell from a graph whether a system has reached equilibrium?
• In a micelle formed by soap molecules, non-polar molecules are primarily located
• Which statement about oxidation is true?
• What best describes a weak acid?
• Which statement distinguishes the atomic-level view from the molecular-level view?
• In electrophoresis, if the buffer solution is below the isoelectric point, the surface of the protein is
• What is the expression for the equilibrium constant Kc in terms of concentrations?
• Which statement compares hydrogen bonds involving oxygen and nitrogen?
• Cellulose is a polymer in plants composed of beta glucose monomers that reinforces plant-cell walls. Which description best defines cellulose?
• Which classes of molecules can undergo substitution reactions?
• What is a redox reaction?
• If oxidising and reducing agents are further apart on the reactivity series, their electrode potentials will be:
• Amphiprotic means
• What is a saturated hydrocarbon?
• What classes of molecules can undergo reduction reactions?
• What is the equivalence point in a titration?
• Which structure denotes an ester group?
• Which of the following represents the amide functional group?
• In an exothermic equilibrium, increasing temperature causes the reaction to shift toward which side?
• Which term refers to a vinyl polymer configuration established during polymerization with all side groups on the same side?
• pH is defined as
• Which conditions are typically used for the catalytic hydrogenation of alkenes to alkanes?
• Biodiesel is a diesel substitute produced by which methods?
• What does IUPAC stand for?
• What does Ka tell us about?
• Which statement correctly describes electron flow in a galvanic cell?
• Geometric isomers are best described as compounds that have the same molecular formula but differ in the spatial arrangement of atoms around a double bond. Which term correctly names these isomers?
• When balancing redox equations in acidic solution, which reagent is added to balance hydrogen atoms after balancing other elements?
• Stereochemical arrangement affects crystallinity; isotactic polymers tend to crystallize while atactic polymers are typically amorphous. Which statement is correct?
• Glycogen is described as which of the following?
• Which statement correctly describes saponification?
• Which structure represents a ketone group?
• Green chemistry is characterized by which principle?
• What is activation energy?
• Which intermolecular interaction is present in all molecules due to electron motion, and increases with molecular size?
• If a solution's [H+] increases, what happens to pH?
• What is the main product of the esterification reaction between an alcohol and a carboxylic acid?
• How do isotactic and atactic differ?
• To convert haloalkane to an alcohol, which reagent is used?
• Which combinations can undergo condensation reactions in this context?
• Why is an external wire necessary in a galvanic cell?
• Infrared spectroscopy is most useful for identifying bonds by observing absorption corresponding to which molecular motion?
• Which arrangement features alternating orientation of side groups along the chain?
• To form a haloalkane from an alkene by electrophilic addition, which reagent is used?
• Chromatography is a technique used to separate the components of a mixture based on which principle?
• Reactions in a galvanic cell are _____.
• In redox chemistry, the oxidising agent is the electron acceptor.
• According to Bronsted-Lowry, acids are proton donors and bases are proton acceptors.
• Which term describes a vinyl polymer with randomly positioned side groups?
• Oxidising and reducing agents closer on the reactivity series will have ____.
• Which catalyst is commonly employed in the Haber process for ammonia synthesis?
• What is an unsaturated hydrocarbon?
• An electrolytic cell is best described as:
• What is the oxidation state of hydrogen in a metal hydride?
• Which statement best describes an unsaturated fatty acid?
• Infrared spectroscopy identifies bonds by detecting absorption of infrared radiation corresponding to what?
• Volatility is best described as?
• Kb is defined as
• Which representation denotes a ketone functional group?
• Reactions in an electrochemical cell are _____.
• To form an ester from an alcohol and a carboxylic acid, what catalytic conditions are necessary?
• On a concentration versus time plot, how can you identify that the system has reached equilibrium?
• If a reaction has Kc = 0.01 at equilibrium, which species predominates?
• Lactose is composed of which monosaccharides?
• What best defines a buffer solution?
• For an exothermic equilibrium, increasing temperature causes the shift toward which direction?
• Standard electrode potential is defined as the voltage measured under standard conditions when a half cell is connected to a standard hydrogen electrode.
• A hydrogen fuel cell generates electricity by reacting hydrogen with oxygen to produce what as a main product?
• If the products from an equilibrium are removed, what will the system do to minimise the disruption?
• In polymer stereochemistry, which term refers to a pattern where R groups are evenly distributed along the chain (for example, one up, one down)?
• In chromatography with a polar stationary phase, which type of molecule tends to be retained more strongly?
• In an electrochemical cell, what does the external circuit primarily carry?
• Which description defines a haloalkane?
• In a high-performance liquid chromatography setup with hexane as the non-polar eluent, which type of molecule would be expected to elute with the mobile phase?
• Kc equals Qc most appropriately when the system has reached what state?
• Why are soaps able to remove non-polar molecules when water is the solvent?
• What do soaps form around non-polar molecules?
• Sucrose is composed of which monosaccharides?
• When will an acid-base indicator change colour?
• Melting point is defined as the temperature at which a solid becomes a liquid.
• Why is a salt bridge necessary in a galvanic cell?
• In redox chemistry, the reducing agent is the electron donor.
• Under acidic dichromate oxidation, an aldehyde is oxidized to which product?
• If Qc is larger than Kc, in which direction will the system shift to re-establish equilibrium?
• What does the acronym REDOX stand for?
• If the concentration of reactants is increased, how will the system at equilibrium respond to minimise the disruption?
• Which functional group is denoted by R-OH?
• Cellulose is a polymer of which type of glucose monomer?
• Which class of molecule can undergo elimination reactions?
• Glycogen is best described as which of the following?
• The position of an atom on the periodic table can help predict whether it will ____.
• Which statement best distinguishes saturated hydrocarbons from unsaturated hydrocarbons?
• For molecules with increasing chain lengths, what happens to dispersion forces and hence boiling point?
• Starch is described as which type of molecule?
• Electrophoresis is a method used to separate ________ by electrical charge.
• What describes a reversible reaction?
• Which reagent converts haloalkane to alcohol?
• Which statement describes a closed system?
• Mass spectrometry often uses which quantity to identify ions?
• Lactose is composed of which monosaccharides?
• X-ray crystallography is primarily used to determine which aspect of organic molecules?
• What are the first four carbon prefixes used in systematic naming?
• Dynamic equilibrium is characterized by what?
• Monoprotic acid
• Which combination of conditions and catalyst is characteristic of the Haber process for ammonia synthesis?
• Which functional group is represented by RCOR?
• Which notation indicates a reversible reaction?
• pOH is defined as
• Which statement correctly defines activation energy?
• Which statement best describes a saturated fatty acid?
• Which set of conditions is the same as those listed for reducing an alkene to an alkane?
• In alcohols, how does boiling point vary from primary to tertiary?
• The relationship C1V1 = C2V2 is most relevant to which concept?
• Which functional group is represented by CHO?
• What is the effect of branching on boiling point according to the material?
• A non-spontaneous chemical reaction can be driven by applying electrical energy in a(n) ______ cell.
• Is esterification reversible?
• To convert a haloalkane to a nitrile, which condition is used?
• Solubility in water describes whether a substance dissolves in water.
• Which of the following symbols represents an alkene?
• Which type of alcohol is least reactive among primary, secondary and tertiary?
• Which polymer is cellulose?
• Which family tends to have higher boiling points due to hydrogen bonding?
• In polymer stereochemistry, which arrangement has side groups randomly positioned along the chain?
• Which of the following is not an intermolecular force?
• Which statement about intermolecular forces and carbon chain parity is correct?
• If pressure is increased in a system with different numbers of gas molecules on each side, which statement is true?
• Which statement best defines chromatography?
• Will a haloalkane have a higher BP than its hydrocarbon derivative?
• What is the primary function of a buffer solution?
• To convert a haloalkane to an amine, which reagent is used?
• Which statement correctly identifies the structure that represents the three-dimensional shape of a single polypeptide chain?
• Biodiesel is typically produced from which type of feedstock?
• Which of the following best defines enzymes?
• Which statement best defines solubility in water?
• What is an acid-base indicator?
• Which statement best defines Kc for a reaction at a given temperature?
• Which statement best describes the molecular level?
• Which sequence correctly describes balancing redox reactions in acidic solution?
• Conjugate base is
• What is oxidation?
• In an exothermic equilibrium, decreasing temperature causes the shift toward which side?
• In the atom economy calculation, the numerator represents which quantity?
• In which arrangement are side groups randomly positioned along the chain?
• Which term refers to a hydrocarbon containing only single covalent bonds?
• Which description best defines tertiary protein structure?
• Which term describes a vinyl polymer configuration with all side groups on the same side of the backbone?
• Which describes the general structure of a soap molecule?
• Mass spectrometry is a technique that separates particles according to which property?
• The primary structure of a protein is best described as what?
• In the Contact process for sulfuric acid production, the principal raw materials are which?
• Kw stands for which concept?
• Which statement correctly defines addition polymerization?
• Atom economy equation is given by which formula?
• Which conditions convert a haloalkane into an alkene?
• Which substance decolourises bromine water?
• Acids are
• Metal plating can be completed through the use of a ______.
• If a reaction has a high atom economy, this is generally considered to be:
• Which statement best describes the oxidation of primary and secondary alcohols with dichromate?
• Limiting reagent is defined as
• How can the oxidation states of transition metals be represented in formulas?
• Le Chatelier's Principle states that if a stress is applied to a system at equilibrium, the system shifts in which direction?
• To convert an alkene to a dihaloalkane, which reagent is used?
• Which term describes a polymer in which R groups are randomly positioned along the chain?
• In a galvanic cell, where does oxidation occur?
• Which term is used for the temperature at which a solid changes to a liquid?
• Which term describes a species that can act as both acid and base?
• Double arrows represent what in reaction notation?
• Which type of alcohol is associated with the highest boiling point?
• Which alcohols show a color change when heated with acidified potassium dichromate(VI)?
• Quaternary protein structure arises when a protein consists of multiple polypeptide chains. Which statement describes this structure?
• Which statement is listed as a factor affecting water solubility?
• A triglyceride is best described as
• Which statement about buffers is true?
• If the pressure is increased in a system at equilibrium, toward which side will the equilibrium shift to minimise disruption?
• Which term describes the temperature at which a liquid changes to a gas?
• For a reaction at equilibrium, which side is favoured when the equilibrium constant Kc is less than 1?
• At the half-way equivalence point, what is pH equal to?
• Do amines and amides have stronger intermolecular forces than alcohols?
• Standard electrode potential is defined as:
• Polyprotic acid
• Which of the following is a redox reaction?
• A reaction with Kc = 150 indicates which statement about the equilibrium composition?
• As hydrocarbon chain length increases, what happens to the boiling point?
• What conditions are necessary for an oxidation reaction?
• In a chromatography setup where methanol is used as the mobile phase, which type of molecule would be expected to elute with the eluate?
• In atomic-level descriptions, which statement is correct?
• What bond type characterizes an alkyne?
• Which disaccharide is formed from glucose and fructose?
• If the pressure is decreased in a system at equilibrium, toward which side will the equilibrium shift to minimise disruption?
• Which of the following represents the amine functional group?
• Which reagent is used to convert haloalkane to nitrile?
• In a redox reaction, the species that is reduced experiences what?
• What is the oxidation state of oxygen in most compounds?
• Which class of molecules can undergo addition reactions?
• In electrophoresis, if the buffer solution is above the isoelectric point, the surface of the protein is
• What conditions are needed to halogenate alkanes and form dihaloalkanes?
• Which product is formed when an aldehyde is oxidized under common conditions?
• Yield of chemical synthesis is best described as the amount of what?
• What is a titration curve?
• In pure water at 25 C, [H+] and [OH-] are equal. What is the pH?
• At dynamic equilibrium, what is happening at the particle level?
• Geometric isomers are compounds that differ in the spatial arrangement of atoms around what feature?
• What does the equilibrium constant Kc tell us about a system at equilibrium?
• Which symbol represents an aldehyde group?
• Maltose is composed of which monosaccharides?
• A weak acid is defined by its ionization in water which is:
• What classes of molecules undergo oxidation reactions?
• Which statement about oxidation and reduction is true?
• Stereoisomers are compounds that have the same structural formula but differ in what?
• What type of glucose molecules make up amylose and amylopectin?
• Which product results from condensing an alcohol with a carboxylic acid under acid catalysis?
• Which statement describes the trend of boiling point with increasing hydrocarbon chain length for nonpolar molecules?
• Which term corresponds to the functional group COOH?
• In a titration, which equation represents the condition for chemical equivalence?
• Which statement describes quaternary protein structure?
• Glycerol produced in saponification is best described as
• What term describes a series of steps tracing the reaction of a reactant to form a product that cannot be formed directly?
• What are the products of saponification when a fat reacts with a strong base?
• Which substance is amphiprotic?
• Which reagent hydrates an alkene to form an alcohol?
• In a triglyceride, what type of bond connects glycerol to fatty acids?
• Which symbol represents an aldehyde group?
• Which statement about solubility factors is listed in the material as a factor determining water solubility?
• Which statement best describes a titration curve for a weak acid with a strong base?
• Which statement best describes secondary protein structure?
• Boiling point is defined as the temperature at which a liquid changes to a gas.
• Amide formation from carboxylic acid and amine requires which condition?
• In an endothermic equilibrium, what is the effect of increasing temperature on the position of the equilibrium?
• In an endothermic equilibrium, what is the effect of decreasing temperature on the position of the equilibrium?