IMAT Chemistry Practice Exam

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• Which of the following is a noble gas?
• Which ion is cyanide?
• Which functional group is formed by linking two alkyl groups through an oxygen atom?
• What does the empirical formula show?
• In organic nomenclature, what information does the prefix provide?
• Q = Ksp indicates ...
• Which description matches a decomposition reaction?
• Which ion is amphiprotic, able to act as both acid and base in solution?
• Where is the largest atomic radius located on the periodic table?
• Which statement correctly describes Group 2 alkaline earth metals?
• Dynamic equilibrium occurs when:
• What happens during incomplete combustion?
• Which term correctly describes the functional group R-CHO?
• Which statement about acids and litmus is true?
• Acids have which taste?
• If [H+] = 1.0 x 10^-3 M at 25°C, what is [OH-]?
• On the pH scale, water at pH 7 is considered
• Which statement best defines enthalpy?
• Which statement best describes the overall electrode behavior in a simple electrolytic process?
• Which acid is the conjugate acid of carbonate ion?
• Which of the following is NOT one of the five factors affecting reaction rate?
• An aromatic hydrocarbon is best described as which of the following?
• Reaction rate is defined as
• Volume percentage is defined as:
• Which factor does NOT affect ionization energy?
• What is a catalyst?
• Which group contains the noble gases?
• Which prefix denotes three carbon atoms?
• What are hydroxides?
• Which of the following is a cation?
• What is the trend for the solubility of Group 2 sulfates in water as you move down the group?
• Which of the following is a polyatomic cation?
• What does electronegativity describe in a covalent bond?
• Which suffix is used for alkenes with a single carbon–carbon double bond?
• A catalyst that is in a different physical state as the reactants is called?
• Which statement best defines a reducing agent?
• Which suffix indicates two carbon–carbon double bonds?
• Which statement about pH and hydrogen ion concentration is true?
• Which description matches an ionic lattice?
• Which of the following represents the nitrate ion?
• Which acid is the formula H3PO4?
• The suffix -one indicates which functional group?
• Which of the following is the sulfate ion?
• What is log base 10 of 0.001?
• Which statement describes the electronegativity trend across the periodic table?
• Which species is carbonate ion?
• In biological systems, water is used in osmosis, metabolic reactions and to carry material around the body.
• Isotopes have identical chemical properties; physical properties can differ.
• Which element is the most electronegative?
• Which oxidation state is typical for Group 1 elements in compounds?
• Water can dissolve ionic and polar compounds.
• Which statement about Kc values is true?
• What is the rate law?
• Forming bonds releases energy; this process is which?
• Bond energy is defined as which of the following?
• How many acidic hydrogens does phosphoric acid contain?
• Which statement about nutrient availability as soil pH changes is true?
• Which species is permanganate?
• First order description?
• Which description characterizes a homogeneous mixture?
• Activation in catalysis is described as
• Which is the correct formula for sulfite ion?
• Which statement best describes the properties of a solid?
• Which species is the hydroxide ion?
• For a salt AB(s) dissolving into A+ and B-, what is the expression for Ksp?
• If Ka is larger, what does this indicate about the acid?
• For a weak acid HA, which constant describes its acid strength?
• Which prefix indicates a chlorine substituent?
• Which of the following is a diatomic element?
• What is log base 10 of 0.1?
• Which statement accurately describes ionic bonding?
• Which is an example of an ionic lattice?
• An oxidizing agent is
• The ion product Q is defined as the product of the ions in solution at any given moment.
• In the rate law expression Rate = k[A]^m[B]^n, what do m and n represent?
• Which term refers to the reactive group of atoms that defines the chemistry of a molecule?
• What are the units of standard enthalpy change of formation?
• Ionization energy is defined as
• Achiral means?
• Atomic number is the number of protons.
• Which oxidation state is typical for Group 2 elements in compounds?
• Zero order describes?
• How many elements are currently known?
• Which is the correct formula for nitrate ion?
• In a neutral compound, what is the total sum of oxidation numbers?
• Which formula represents sulfuric acid, a strong mineral acid?
• What is the general structural formula of an ester?
• Identify which equation represents a decomposition reaction.
• Le Chatelier's Principle states that if an equilibrium is disturbed, it will shift to oppose the change.
• Diastereomers are defined as?
• Which ion is silicate?
• Which acid has formula H2CO3?
• What do buffers do?
• Which of the following are non-metal oxides?
• Molarity is defined as:
• Which is an example of a physical property?
• Which acid has the formula HNO3?
• Which statement best describes the properties of a liquid?
• In acid-base terms, a base is a substance that
• Which formula represents hydrochloric acid, a strong acid?
• A saturated hydrocarbon is defined as which of the following?
• Which of the following are metal oxides?
• In organic chemistry, what does the term stem refer to?
• Which formula shows how atoms are bonded?
• What is the SI unit of molarity?
• What is the color of fluorine gas?
• What is a sigma bond?
• Which statement correctly describes how lattice energy depends on ion size and charge?
• Ionization energy is defined as which of the following?
• Which statement about the equilibrium constant K is correct?
• Which general formula represents an aldehyde?
• What is the oxidation number of hydrogen when bonded to metals?
• For a reaction with rate = k[A]^m[B]^n, if doubling [A] while keeping [B] constant doubles the rate, what is m?
• If a compound does not undergo any oxidation or reduction during a reaction, it is described as?
• Which prefix denotes six carbon atoms?
• Which statement about noble gases at room temperature is true?
• When Q > Ksp, the system will
• In a pure element, what is the oxidation state?
• If a molecule has 3 chiral centers, what is the maximum number of stereoisomers?
• What is the value of the gas constant R?
• What is the general formula for a primary amine?
• Which statement about lattice energy trend is correct?
• Which statement correctly describes Group 1 alkali metals?
• Which acid has formula H2CO3?
• What is Avogadro's constant in scientific notation?
• One mole of any substance contains how many entities?
• Which statement describes cis-trans isomerism?
• Which statement describes a macro covalent lattice?
• Which functional group is represented by the general formula R-O-R?
• What characterizes a combustion reaction?
• Which description matches a metallic lattice?
• Which lattice type has a very high melting point and hardness due to covalent bonds throughout the structure?
• Which term is the suffix used for alkanes, indicating all carbon-carbon single bonds?
• On the catalyst surface, reactant molecules rearrange and form products more easily. Which statement best describes this step?
• Which acid would donate exactly three protons on complete ionization?
• Parts per million (ppm) is defined as:
• What is log base 10 of 1?
• Which relationship holds for the ionization constants of water?
• Which acid has formula CH3COOH?
• In sp3 hybridization, what is the percent s character?
• Which geometry corresponds to sp hybridization?
• What are groups on the periodic table?
• The ion product Q is used to predict whether a precipitate will form.
• Which general formula represents a carboxylic acid?
• Which statement about noble gases is true?
• Which particles have no charge and weigh 1 amu?
• Which statement correctly describes solubility changes with temperature for solids and gases?
• The suffix -ol in IUPAC nomenclature indicates which functional group?
• In a standard reactivity series, which item is not a metal?
• Which statement is true about the cathode in an electrolytic cell?
• Which metal is the most reactive in the standard reactivity series among the following?
• Which acid is classified as a strong acid?
• Under the ideal gas assumptions, what is assumed about intermolecular forces between gas molecules?
• Which of the following best describes transition metals?
• In Group 7 (halogens), how does reactivity change as you move down the group?
• Which statement describes the anode in electrolysis?
• Which type of force is present in all molecules and arises from temporary dipoles?
• Which prefix corresponds to the alkyl group CH3CH2?
• Which statement accurately describes alkali metals?
• Atomisation energy is defined as which of the following?
• Which type of forces primarily determine the state of matter and physical properties?
• How many covalent bonds can carbon form?
• Isotopes are atoms with same number of protons and electrons but different number of neutrons.
• Mass percentage is defined as:
• For reactions involving a solid and a liquid, increasing the solid's surface area will
• Most plants prefer soil pH in which range?
• What is stoichiometry?
• Peroxides have what unusual oxidation number for oxygen?
• Which factor is among the five affecting reaction rate and is typically added to speed up the process without being consumed?
• pH is defined as
• A compound is defined as
• Which ion carries a 3- charge?
• Which geometry corresponds to sp2 hybridization?
• Solubility is defined as:
• What is the general outcome of an acid-base neutralization reaction?
• Which statement best describes an oxidizing agent?
• Which species is the dichromate ion?
• During electrolysis of a halide-containing solution, what is formed at the anode?
• What is the value of the water ionization constant Kw at 25°C?
• If Q < Ksp, what happens to the solution?
• Which hybridization corresponds to a tetrahedral geometry?
• Which element forms a metallic lattice among the following?
• Hydrogen bonding and solubility trend?
• Which statements correctly describe factors affecting solubility?
• Which acid is triprotic?
• What describes a decomposition reaction?
• Which ion contains chromium in a +6 oxidation state?
• Oxidation is defined as
• Stereoisomers are defined as?
• Which product is not typically produced by incomplete combustion of a hydrocarbon?
• Which is a chemical property example?
• What is the color of chlorine gas?
• Which term describes compounds with the same formula and connectivity but different spatial arrangement?
• At room temperature, one mole of an ideal gas occupies about 24 dm^3. Which expression gives the number of moles from a gas volume V (in dm^3)?
• Which general formula represents an alcohol?
• Which formula represents the carbonate ion?
• Upon increasing the concentration of a reactant in a reaction at equilibrium, in which direction will the system shift?
• What is the general nomenclature for metal hydroxides?
• The shielding effect is best described as
• Which particle is negatively charged without weight?
• For a weak acid HA ⇌ H+ + A-, which expression correctly represents Ka?
• In a zero-order reaction, what happens to the rate if [A] is doubled?
• Second order description?
• In organic nomenclature, what does stem refer to?
• A supersaturated solution will precipitate when disturbed.
• Which statement about solids is true?
• Which statement best describes the properties of isotopes?
• In sp3 hybridization, what percentage of s character is present?
• How does increasing temperature affect reaction rate?
• In sp2 hybridization, what fraction of s character is present?
• Which of the following is an alkyl halide?
• Which statement describes a simple covalent lattice?
• If Kc = 1, which statement is true?
• What is the color of bromine liquid?
• Which prefix denotes a hydrocarbon with two carbon atoms?
• R-COOH represents which functional group?
• Which of the following elements is less reactive than hydrogen?
• Which ion is hydrogen sulfate?
• What is the correct form of the ideal gas equation?
• In heterogeneous catalysis, what is the correct sequence of steps for the catalyst’s mode of action?
• Which statement about rate law exponents m and n is true?
• What is a buffer?
• Which statement about the solubility product constant (Ksp) is correct?
• Which statement correctly describes a physical change?
• A carbon–carbon single bond consists of how many sigma and pi bonds?
• What is log base 10 of 1000?
• Enantiomers have what relationship to their stereocenters?
• Strong acids are characterized by which in aqueous solution?
• What is the suffix used for hydrocarbons with two carbon–carbon double bonds?
• Which statement describes chemical properties?
• Which statement accurately describes sigma and pi bonds?
• What is the effect of increasing concentration on the rate of a solution-phase reaction?
• What is the oxidation number of oxygen in most compounds?
• In a single-displacement reaction, what happens?
• Which list contains all the noble gases?
• Which statement best defines synthesis in chemistry?
• Which acid is organic?
• What does the acid dissociation constant Ka measure?
• Oxides are defined as which of the following?
• A mixture is defined as
• Which of the following is the correct formula for nitrite?
• In sp hybridization, are the s and p character percent values equal?
• Which prefix corresponds to the alkyl group CH3CH2CH2?
• Constitutional isomers differ in what aspect?
• What does a pH value of 7 indicate?
• What is the prefix used in organic nomenclature to denote the hydroxyl group?
• If Kc = 1, which statement is true?
• What happens to pH when a buffer solution is overwhelmed by a large addition of acid?
• For a solution, the number of moles of solute is given by which formula when concentration c is in mol/L and volume V is in L?
• Molality is defined as:
• Which of the following is the sulfite ion?
• Which statement explains why noble gases are unreactive?
• If an element's mass number changes but atomic number remains constant, they are isotopes.
• Dative bonding is defined as a covalent bond in which:
• Reduction is defined as
• Chiral center is defined as?
• Which of the following describes a cation?
• Metal oxides are typically which type of oxide?
• The maximum number of stereoisomers for a molecule with n chiral centers is?
• Which general formula represents a ketone?
• The lattice enthalpy change when forming an ionic solid from gaseous ions is which?
• What is the correct name for CO in common nomenclature?
• Which acid is the strongest among the four?
• Which prefix denotes five carbon atoms?
• What is the main way a catalyst increases the rate of a reaction?
• Which species is the classic strong oxidizing agent in acidic solution?
• Which formula represents nitric acid?
• Which of the following is not a diatomic element?
• Plane of symmetry and chirality: which statement is correct?
• An element is a substance made of atoms that all contain the same number of protons.
• Which statement about atomisation energy is true?
• Which lattice type is macro covalent?
• Adding a common ion to a weak acid solution has what effect on ionization?
• Which of the following is the phosphate ion?
• Mass number is the sum of the number of neutrons and protons in an atomic nucleus.
• What is the standard definition of pKa in terms of Ka?
• Which statement about weak acids and bases is true?
• How is a redox reaction defined?
• What are intermolecular forces?
• Which statement correctly identifies hydrochloric acid?
• Which statement is true about single elements and oxidation state?
• Which statement describes the ionization energy trend across the periodic table?
• In a C≡C triple bond, how many sigma and pi bonds are present?
• Which process describes reactant molecules attaching to the surface of a solid catalyst?
• Common ion effect occurs when adding an ion already present in the equilibrium.
• What are buffers made of?
• In a single-displacement reaction, which statement best describes the event?
• An alkyl halide is represented by which general formula?
• Which statement describes physical properties?
• Which lattice conducts electricity in the solid state?
• The suffix -oic acid indicates which functional group?
• The enthalpy change of atomisation is which type of process?
• On the pH scale, a value below 7 indicates?
• What characterizes a meso compound?
• What causes the H-F bond polarity?
• In electrolysis, if no halogens are present in the anode environment, oxidation at the anode may produce which gas?
• If Kc > 1, which is true?
• Which oxide type reacts with both acids and bases?
• In electrolysis, what occurs at the cathode?
• Which statement about a gas is correct?
• In ionic bonding, what happens to metal atoms during bond formation?
• Which statement best describes metallic bonding?
• According to the given base definition, a base is a substance that
• In redox terminology, LEO and GER stand for
• Increasing the surface area of reactants generally has what effect on reaction rate?
• If two atoms have the same number of protons but different number of neutrons, they are isotopes.
• In hydrocarbon prefixes, what does 'meth' indicate?
• R-OH represents which functional group?
• Group 7 elements are which type of elements?
• Which prefix corresponds to the 3-carbon alkyl group?
• Which statement best describes the H2 molecule?
• If Kc < 1, which statement best describes the equilibrium?
• Period 3 elements can exceed the octet rule in which type of bonding?
• Which is an example of a homogeneous mixture?
• Which statement describes hydrogen bonding?
• Which statement best describes how a catalyst affects the reaction rate?
• Breaking bonds in a chemical reaction requires energy; this process is which?
• Which statement best defines an unsaturated hydrocarbon?
• Which statement about pH is correct?
• Which statement describes a cis isomer?
• Which process is the first step in the mode of action of a heterogeneous catalyst?
• Which statement about pH and hydrogen ion concentration is true?
• What color does acid turn blue litmus paper?
• R-C=O represents which functional group?
• Which ion has silicon in the +4 oxidation state?
• Which statement best describes the properties of a gas?
• Which statement is true about Ka and [H+]?
• In a double displacement reaction, what occurs?
• How is the number of moles calculated from mass and molar mass?
• Which statement describes a trans isomer?
• Which acid is the weakest among the four?
• Which suffix indicates a carbon–carbon triple bond?
• What does the molecular formula show?
• Which statement best describes the trend of atomic radius across the periodic table?
• What is the correct IUPAC-style name for Fe(OH)3?
• What term describes the group of atoms in an organic molecule that governs its characteristic reactions?
• What is a pi bond?
• Which statement about reactant types is typically associated with faster reaction rates?
• Which statement correctly matches carbon hybridization to geometry?
• Which statement about soil pH and acid rain is true?
• Which lattice type is characterized by a low melting point and is not a conductor?
• Which statement is true under the ideal gas assumptions?
• A catalyst that is in the same physical state as the reactants is called what?
• What color is solid iodine?
• Which statement best defines a covalent bond?
• Chiral means?
• Which prefix denotes six carbon atoms?
• Which statement correctly defines a redox reaction?
• What is the common oxidation number of oxygen in most oxides?
• In hydrocarbon prefixes, which option indicates one carbon?
• Which statement is true about intramolecular forces?
• What is the oxidation number of hydrogen when bonded to nonmetals?
• Which statement about Kc is true?
• Which statement correctly defines a heterogeneous catalyst?
• Which acid is the organic acid commonly used in vinegar?
• Which ion corresponds to phosphite?
• Which subatomic particle has a positive charge and is located in the nucleus with a mass of 1 amu?
• Which statement is true about electronegativity across a period?
• The change in lattice energy refers to which of the following?
• Which two factors affect lattice energy?
• In chemistry, reactivity describes what?
• An unsaturated hydrocarbon is best described as which of the following?
• Which statement correctly describes Group 7 elements?
• Which statement best describes water as a solvent?
• Which of the following represents the carbonate ion?
• In kinetic theory, what is the origin of gas pressure?
• Under the ideal gas model, the volume occupied by the gas molecules themselves is considered negligible.
• Identify the synthesis reaction among the following equations.
• Which statement defines a diastereomer?
• How do hydrogen bonds affect boiling point?
• Which is the correct formula for phosphate ion?
• What is the name of CuOH?
• Which hybridization leads to a trigonal planar geometry?
• What are periods on the periodic table?
• Catalysts are not _____ in a reaction.
• R-CHO represents which functional group?
• Which statement is true about dynamic equilibrium?
• Which factor increases ionization energy?
• The hybridization sp is associated with which molecular geometry?
• The suffix -al indicates which functional group?
• Cathode is defined as which of the following?
• Which oxides are amphoteric?
• Which statement correctly defines pOH?
• What is rate constant?
• Which suffix is used to name hydrocarbons with a triple bond?
• What is log base 10 of 0.01?
• Which prefix denotes four carbon atoms?
• Which statement correctly defines a covalent bond?
• Which suffix indicates one carbon–carbon double bond?
• Which statement best describes an enantiomer?
• A solution of a salt formed from a weak acid and a strong base is typically what kind of solution?
• Which prefix indicates a bromine substituent?
• Which ion is hydrogen carbonate?
• Which prefix corresponds to the alkyl group CH3?
• Which statement is true about log base 10 values?
• What does the solubility product constant (Ksp) indicate?
• Among the acids listed, which is the strongest in water?
• Desorption in catalysis refers to
• In Group 2 carbonates, what is the trend in thermal stability as you move down the group?
• Mass/Volume percentage is defined as:
• Regarding distance from the nucleus, which statement is correct?
• Which oxides are acidic?