General Chemistry Quiz (Final)

C. Decomposition reaction

What type of reaction is: CuSO₄·5H₂O → CuSO₄ + 5H₂O?

A. Combination reaction
B. Combustion reaction
C. Decomposition reaction
D. Double-replacement reaction
E. Single-replacement reaction

E. Sublimation of dry ice

Which of the following is an example of physical change?

A. Combustion
B. Digestion
C. Rusting of a can
D. Souring of milk
E. Sublimation of dry ice

C. 102.56°F

ese was not able to come to school today because he is sick. When his mom checked his body temperature and the thermometer reads 39.2°C. What is his body temperature in °F?

A. 12.96°F
B. 38.56°F
C. 102.56°F
D. 128.16°F
E. 173.52°F

E. Zinc in copper solution

Which of the following is a reaction that will have a product?

A. Lead in magnesium sulfate
B. Magnesium in copper sulfate
C. Platinum in water
D. Silver in hydrochloric acid
E. Zinc in copper solution

B. Erwin Schrödinger

The quantum mechanical model specifies the probability of finding an electron in the three-dimensional space around the nucleus. Quantum mechanics model is based on the wave equation and solution developed by _____.

A. Ernest Rutherford
B. Erwin Schrödinger
C. John Dalton
D. Joseph John Thomson
E. Niels Bohr

E. Volume

The following properties are independent of the amount of matter, EXCEPT:

A. Boiling point
B. Gravity
C. Melting point
D. Pressure
E. Volume

C. Salad

Which of these is an example of a heterogeneous mixture?

A. Steel
B. Wine
C. Salad
D. Air
E. Simple syrup

D. 18K Gold or E. None of these?

The following are mixtures, EXCEPT:

A. Bronze
B. Cast Iron
C. Sterling Silver
D. 18K Gold
E. None of these

A. Antoine-Laurent Lavoisier

Who defined elements as substances that chemical analyses had failed to break down into simpler entity?

A. Antoine-Laurent Lavoisier
B. Democritus
C. Henry Moseley
D. Johann Wolfgang Döbereiner
E. John Newlands

D. Element

Which of the following is a matter that does not have a variable composition and cannot be separated into simpler substances?

A. Homogeneous mixture
B. Pure substance
C. Compound
D. Element
E. Heterogeneous mixture

B. -16.9°C

One day, Marry visited the mountains of Gangwon province in Korea. The temperature that day is 1.58°F. What is the temperature in Gangwon Province during that day?

A. -15.2°C
B. -16.9°C
C. -22.45°C
D. -32.12°C
E. -54.75°C

C. 26.50 mL

A sample carbon dioxide in a pump has a volume of 25 mL, and it is at 60°C. When the amount of gas and pressure remain constant, find the new volume of carbon dioxide in the pump if the temperature is increased to 80°C.

A. 18.75 mL
B. 23.58 mL
C. 26.50 mL
D. 33.33 mL
E. 35.60 mL

C. Mixture

Nesthy Petecio won a bronze medal during the Paris Olympics 2024. Bronze is an example of what type of substance?

A. Compound
B. Element
C. Mixture
D. Pure substance
E. None of these

C. Distillation

In the laboratory a student wants to recover the ethanol from a mixture of water and alcohol. What type of separation method for mixture is he going to use?

A. Centrifugation
B. Decantation
C. Distillation
D. Filtration
E. Fractional crystallization

E. Sublimation

Grandma places a naphthalene ball in her closet to prevent insects from staying there and to keep her clothes deodorized. Naphthalene ball undergoes what type of phase change?

A. Condensation
B. Deposition
C. Melting
D. Recombination
E. Sublimation

B. NaBr + Cl₂

What will be the product/s for this equation?

NaCl + Br₂ → ?

A. Na + Br₂ + Cl₂
B. NaBr + Cl₂
C. NaBr + NaCl
D. No reaction
E. Both A & B

D. Lead

Which of the following is the least reactive metal in the set?

A. Cadmium
B. Cobalt
C. Iron
D. Lead
E. Tin

C. 15.610 mL

A 20 mL sample of gas is at 4.000 atm. What will be the volume of the gas if the pressure is increased to 5.125 atm, with a fixed amount of gas and temperature?

A. 1.025 mL
B. 3.950 mL
C. 15.610 mL
D. 25.625 mL
E. 410 mL

E. Volume

Which of these is NOT an intrinsic property?

A. Density
B. Melting point
C. Pressure
D. Specific gravity
E. Volume

D. 3.93 atm

Determine the pressure change when a constant volume of a gas at 3.50 atm is heated from 15°C to 50°C.

A. 1.05 atm
B. 2.35 atm
C. 3.12 atm
D. 3.93 atm
E. 11.67 atm

B. Change in size

The following are indications for chemical change, EXCEPT:

A. Absorption of heat
B. Change in size
C. Formation of precipitate
D. Production of bubble
E. Release of heat

C. Isotone

These are elements with the same neutron but different protons.

A. Isotopes
B. Isobar
C. Isotone
D. Isomer
E. Isozyme

C. The molecules are constantly random

The following is true about liquid state of matter, EXCEPT:

A. It assumes the shape of the container
B. It has a definite volume
C. The molecules are constantly random
D. Its molecular motion is gliding
E. None of these

C. Isomers

The chemicals 1-chloropropane and 2-chloropropane are examples of _____.

A. Enantiomers
B. Isobars
C. Isomers
D. Isotones
E. Isotopes

D. NaOH + Mg

MgOH + Na → ?

A. MgOH + NaOH
B. MgOH + NaOH + H₂O
C. Na + Mg + H₂O
D. NaOH + Mg
E. No Reaction

E. R.A. Millikan

Who accurately measured the charge and mass of electrons through his oil drop experiment?

A. Ernest Rutherford
B. J.J. Thomson
C. James Chadwick
D. John Dalton
E. R.A. Millikan

B. Deposition

What is the process of converting gas to solid?

A. Condensation
B. Deposition
C. Freezing
D. Ionization
E. Sublimation

E. Cefuroxime

Which of the following cephalosporins can cross the blood-brain barrier?

A. Cephalexin
B. Cefazolin
C. Cefmetazole
D. Cefprozil
E. Cefuroxime

C. Nuclear Fission

Uranium-235 combines with a neutron to form an unstable intermediate, which quickly splits into barium-144 and krypton-89 plus three neutron. This process is an example of:

A. Chemical change
B. Ionization reaction
C. Nuclear Fission
D. Nuclear Fusion
E. Physical Change

A. Antoine Lavoisier

Who developed the law of conservation of mass that states that mass is always constant, and it is neither created nor destroyed?

A. Antoine Lavoisier
B. Ernest Rutherford
C. J.J. Thomson
D. John Dalton
E. Joseph Proust

B. Same element, different mass number

Which of the following is true about isotopes?

A. Same number of neutrons, different number of proton
B. Same element, different mass number
C. Same molecules, different structure
D. Same mass number, different element
E. Same element, different number of electron

B. Molarity

Which of the following expression of concentration is the moles of solute per L of solution?

A. Molality
B. Molarity
C. Normality
D. Mole fraction
E. Mole percentB. Molarity

B. Pressure

What is constant in Charles' Law for gases?

A. Temperature
B. Pressure
C. Volume
D. Weight
E. All of the above

B. -459°F

What is the absolute zero in °F?

A. -273°F
B. -459°F
C. 0°F
D. 273°F
E. 459°F

B. Strong Electrolytes

Which of the following dissociates completely in water?

A. Weak Electrolytes
B. Strong Electrolytes
C. Non-Electrolyte
D. Both A & B
E. None of these

A. Antoine Lavoisier

Who correctly concluded that water was not an element but a compound of oxygen and inflammable air, known as hydrogen?

A. Antoine Lavoisier
B. Ernest Rutherford
C. J.J. Thomson
D. John Dalton
E. Joseph Proust

C. Open system

A pan of boiling water without cover is an example of:

A. Closed system
B. Isolated system
C. Open system
D. Surrounding
E. System

D. 3923.6°F

Convert the boiling point of silver, 2162°C, to Fahrenheit.

A. 1183.33°F
B. 2189.6°F
C. 3859.6°F
D. 3923.6°F
E. 3949.2°F

C. p-block

What block of the periodic table of elements does the element Sn belong to?

A. s-block
B. d-block
C. p-block
D. f-block
E. None of these

A. Gas

According to Henry's Law, solubility of _____ increases as pressure increases.

A. Gas
B. Liquid
C. Plasma
D. Solid
E. None of the above

B. Atomic weight

What are the bases of John Newlands in listing elements in his octaves periodic table of element?

A. Alphabetical order
B. Atomic weight
C. Atomic symbol
D. Atomic number
E. Similarities in their properties

D. Coinage Metals

What is the other name for Group 1B elements?

A. Alkali Metal
B. Alkali Earth Metals
C. Boron Group
D. Coinage Metals
E. Noble Gases

D. Both B and C

Which of the following subatomic particle is used in the determination of the weight of an atom?

A. Electron
B. Neutron
C. Proton
D. Both B and C
E. None of the choices

A. 3548.89°C

Convert the melting point of carbon, 6420°F, into °C.

A. 3548.89°C
B. 3559.6°C
C. 3584.44°C
D. 11524°C
E. 11588°C

C. Double replacement Reaction

The formula AB + CD → AD + CB, best describes what type of reaction?

A. Combination Reaction
B. Decomposition Reaction
C. Double replacement Reaction
D. Single-replacement Reaction
E. Synthesis Reaction

A. Democritus

Who stated that matter is made up of small indivisible particles and coined the term "atomos"?

A. Democritus
B. Erwin Schrödinger
C. J.J. Thomson
D. John Dalton
E. Niels Bohr

C. Ernest Rutherford

Who contended that atom is mostly an empty space?

A. John Dalton
B. J.J. Thomson
C. Ernest Rutherford
D. Niels Bohr
E. Erwin Schrödinger

B. Brønsted-Lowry Theory

Which theory states that acids are proton donor while bases are proton acceptor?

A. Arrhenius Theory
B. Brønsted-Lowry Theory
C. Lewis Theory
D. Pearson's HSAB Theory
E. Water theory

A. Buffers

Which of the following have the property of resisting changes in pH when acids or bases are added to them?

A. Buffers
B. Colloids
C. Weak electrolyte
D. Non-electrolyte
E. Strong electrolytes

A. Absolute Zero

_____ is the coldest temperature that an object can reach.

A. Absolute Zero
B. Boiling Point
C. Crystallization Point
D. Freezing Point
E. Melting Point

B. Isolated system

Which of the following does not allow exchange of both energy and matter?

A. Closed system
B. Isolated system
C. Open system
D. Surrounding
E. System

D. Proton donor, proton accepto

According to Bronsted-Lowry Theory, Acids are ______ and Bases are ______.

A. Electron acceptor, electron donor
B. Electron donor, electron acceptor
C. Proton acceptor, proton donor
D. Proton donor, proton acceptor
E. Both A and D

B. Erwin Schrodinger

Who developed the quantum mechanics model and postulated that electron moves in 3D structure?

A. Ernest Rutherford
B. Erwin Schrodinger
C. J.J. Thomson
D. James Chadwick
E. Niels Bohr

C. Recombination

his is the transformation of plasma to gas.

A. Deposition
B. Ionization
C. Recombination
D. Sublimation
E. Thawing

A. Centrifugation

Blood is a mixture that can be separated through ______.

A. Centrifugation
B. Decantation
C. Distillation
D. Filtration
E. Filtration

B. Only i and ii are correct

Which of the following best describes intrinsic property?

i. It is also called as intensive property
ii. This is independent on the mass and size of matter
iii. This includes volume and heat content

A. Only i is correct
B. Only i and ii are correct
C. Only i and iii are correct
D. Only ii and iii are correct
E. All choices are correct

B. Plum Pudding Model

What model of atom was proposed by J.J. Thomson?

A. Billiard Ball Model
B. Plum Pudding Model
C. Planetary Model
D. Quantum Mechanics Model
E. None of these

E. Volatile metal

What group does Zinc belong to?

A. Coinage metal
B. Scandium subgroup
C. Titanium subgroup
D. Vanadium subgroup
E. Volatile metal

D. ii and iii are correct

Which of the following best describes Group 3A elements?

i. They belong to the p-block
ii. It is also known as Boron Group
iii. B, Al, Ga, In, and Tl belongs to this group

A. Only i is correct
B. Only ii is correct
C. i and ii are correct
D. ii and iii are correct
E. None of the above

C. A substance that cannot be separated into other kinds of matter by physical means

What is the definition of a pure substance?

A. A substance that can be separated by physical means
B. A substance composed of two or more elements chemically combined
C. A substance that cannot be separated into other kinds of matter by physical means
D. A mixture of two or more substances
E. A substance that changes phase upon heating

E. Gravity

Which of the following is NOT a property of matter?

A. Volume
B. Mass
C. Color
D. Weight
E. Gravity

A. A substance that consists of only one type of atom

Which of the following is the correct definition of an element?

A. A substance that consists of only one type of atom
B. A substance that can be separated into two or more elements
C. A combination of two or more compounds
D. A mixture of two or more substances
E. A substance composed of molecules

C. It is composed of two or more elements chemically combined

Which of the following is true about a compound?

A. It consists of a single element
B. It cannot be separated by chemical means
C. It is composed of two or more elements chemically combined
D. It is always homogeneous
E. It can be separated into elements by physical means

C. Components retain their individual properties

Which of the following is a characteristic of a mixture?

A. Has a uniform composition throughout
B. Can only be separated by chemical means
C. Components retain their individual properties
D. Contains only one type of element
E. Cannot be physically separated

B. It contains two or more substances that can be physically separated

Which of the following best describes a heterogeneous mixture?

A. It has a uniform composition throughout
B. It contains two or more substances that can be physically separated
C. It is made up of only one type of atom
D. The components cannot be physically separated
E. It is chemically bonded together

C. Distillation

What would be the most appropriate method for separating a mixture of salt and water?

A. Decantation
B. Filtration
C. Distillation
D. Centrifugation
E. Chromatography

C. Evaporation

In an experiment where two liquids are mixed, and one of the liquids boils off to form gas, which physical change is this an example of?

A. Freezing
B. Condensation
C. Evaporation
D. Sublimation
E. Ionization

D. Decantation

What would be the most appropriate method for separating oil and water?

A. Distillation
B. Evaporation
C. Filtration
D. Decantation
E. Centrifugation

D. A physical change affects only the appearance, while a chemical change affects both appearance and composition

Which of the following statements best describes the difference between a physical and chemical change?

A. A physical change results in the formation of a new substance, while a chemical change does not.
B. A chemical change can be reversed, but a physical change cannot.
C. A physical change affects the composition of the substance, but a chemical change does not.
D. A physical change affects only the appearance, while a chemical change affects both appearance and composition.
E. A chemical change occurs only in compounds, while physical changes occur in elements.

D. Pressure

Which factor influences the solubility of a gas in a liquid according to Henry's Law?

A. Temperature
B. Particle size
C. Presence of other solutes
D. Pressure
E. Solvent type

D. Burning of wood

Which of the following would NOT be considered a physical change?

A. Melting of ice
B. Boiling of water
C. Dissolving sugar in tea
D. Burning of wood
E. Freezing of water

D. Filtration

Which separation method would be most efficient for separating sand from water in a heterogeneous mixture?

A. Centrifugation
B. Distillation
C. Evaporation
D. Filtration
E. Sublimation

C. Law of Definite Proportions

Which law states that a chemical compound always contains the same proportion of elements by mass?

A. Henry's Law
B. Law of Conservation of Mass
C. Law of Definite Proportions
D. Law of Multiple Proportions
E. Law of Combining Weight

C. Element

Which of the following is the simplest form of matter?

A. Alloy
B. Compound
C. Element
D. Heterogeneous mixture
E. Homogeneous mixture

C. Isotone

______ are elements with the same number of neutrons but different protons.

A. Isobar
B. Isomer
C. Isotone
D. Isotopes
E. Isozyme

C. Group 3BC

What group do the lanthanides and actinides belong to?

A. Group 1B
B. Group 2B
C. Group 3B
D. Group 4B
E. Group 5B

E. Tellurium

Which of the following is NOT a member of Group 4A?

A. Carbon
B. Germanium
C. Lead
D. Silicon
E. Tellurium

B. Alcohol

Which of the following is not a weak electrolyte?

A. Acetic Acid
B. Alcohol
C. Ammonia
D. None of these
E. Water

D. Alcohol

What is the product for the reaction of organic substance with microbes?

A. Carboxylic acid
B. Aldehyde
C. Ketone
D. Alcohol
E. Sulfides

C. Oxygen

Which of the following is an example of an element?

A. Alcohol
B. Carbon dioxide
C. Oxygen
D. Salt
E. Water

D. Elements consist of one type of atom, while compounds consist of multiple types of atoms.

What is the primary difference between an element and a compound?

A. Compounds are always homogeneous mixtures.
B. Elements can be broken down into simpler substances, while compounds cannot.
C. Elements can be separated by physical means, while compounds cannot.
D. Elements consist of one type of atom, while compounds consist of multiple types of atoms.
E. Elements do not have a chemical formula, while compounds do.

B. Solubility decreases

What would happen to the solubility of a gas in a liquid as the temperature increases?

A. Solubility increases
B. Solubility decreases
C. No effect on solubility
D. Solubility becomes unpredictable
E. Solubility remains constant

B. Components of a mixture retain their individual properties

83. Which of the following statements about mixtures is correct?

A. All mixtures are homogeneous.
B. Components of a mixture retain their individual properties.
C. Mixtures cannot be separated by physical methods.
D. Mixtures have a fixed composition.
E. Mixtures have a uniform composition throughout.

D. Melting ice

Which of the following is an example of a physical change?

A. Burning wood
B. Combustion of gasoline
C. Cooking an egg
D. Melting ice
E. Rusting iron

C. Ability to dissolve in water

Which of the following properties would be used to classify a substance as a physical property?

A. Reactivity with oxygen
B. Ability to rust
C. Ability to dissolve in water
D. Flammability
E. Toxicity

D. The components have a uniform composition throughout.

Which of the following best describes a homogeneous mixture?

A. The components are not uniformly distributed.
B. The components can be easily distinguished.
C. The components can be separated by physical means.
D. The components have a uniform composition throughout.
E. The components react chemically with each other.

B. Evaporation

What is the process called when a liquid turns into a gas?

A. Condensation
B. Evaporation
C. Freezing
D. Melting
E. Sublimation

C. The solute is evenly distributed throughout the solvent

Which of the following is a characteristic of an ideal solution?

A. It has distinct layers
B. The components cannot be separated by physical methods
C. The solute is evenly distributed throughout the solvent
D. It is a heterogeneous mixture
E. The solute remains undissolved

B. A mixture where the components are evenly distributed

What is the definition of a homogeneous mixture?

A. A mixture where the components are visibly different
B. A mixture where the components are evenly distributed
C. A mixture that can be separated by physical means
D. A mixture with two or more phases
E. A mixture that is chemically bonded

B. Solutions are homogeneous, while suspensions are heterogeneous.

What is the key difference between a solution and a suspension?

A. Solutions have particles that can settle out, while suspensions do not.
B. Solutions are homogeneous, while suspensions are heterogeneous.
C. Suspensions have a uniform composition, while solutions do not.
D. Solutions can be separated by filtration, while suspensions cannot.
E. Suspensions are always gases, while solutions are always liquids.

A. Density

Which of the following properties is most useful for identifying an unknown liquid?

A. Density
B. Mass
C. Color
D. Volume
E. Weight

B. The temperature at which a liquid turns into a gas

Which of the following best describes the boiling point of a substance?

A. The temperature at which a solid turns into a liquid
B. The temperature at which a liquid turns into a gas
C. The temperature at which a gas turns into a liquid
D. The temperature at which a liquid solidifies
E. The temperature at which a gas turns into a plasma

D. Change in phase

Which of the following is NOT a characteristic of a chemical change?

A. Change in color
B. Formation of a precipitate
C. Release or absorption of energy
D. Change in phase
E. Formation of a new substance

B. A temperature change with no external heat source

Which of the following changes is most likely to occur when a chemical reaction takes place?

A. A change in size or shape of the object
B. A temperature change with no external heat source
C. A change in the color of the substance
D. A change in phase from solid to liquid
E. A change in the texture of the substance

B. Mixtures can be separated by physical means.

What is the characteristic of a mixture that distinguishes it from a compound?

A. Mixtures are always homogeneous.
B. Mixtures can be separated by physical means.
C. Mixtures are made up of only one type of atom.
D. Mixtures have a fixed composition.
E. Mixtures can only be homogeneous.

B. Liquid

If a substance has a melting point of 0°C and a boiling point of 100°C at standard pressure, what phase will the substance be in at 25°C?

A. Solid
B. Liquid
C. Gas
D. Plasma
E. Mixture

A. Exothermic

If a substance undergoes a chemical reaction and releases energy, what type of reaction is this?

A. Exothermic
B. Endothermic
C. Physical
D. Combustion
E. Sublimation

B. It results in the formation of a new substance

What is the primary characteristic of a chemical reaction?

A. It involves a change in shape
B. It results in the formation of a new substance
C. It can be easily reversed
D. It does not involve any energy change
E. It is always a physical change

B. Endothermic

If a chemical reaction absorbs energy from the surroundings, what type of reaction is this?

A. Exothermic
B. Endothermic
C. Catalytic
D. Combustion
E. Oxidation

C. Air

Which of the following is an example of a mixture?

A. Water
B. Salt
C. Air
D. Hydrogen
E. Gold