Matter and Its Properties: Interactive Learning Quizzes for Twelfth Grade Science

Question 1

The intermolecular forces that hold water molecules together are:

Accepted Answer

Hydrogen bonds

Answer

Covalent bonds

Answer

Ionic bonds

Answer

Metallic bonds

Question 2

A chemical reaction in which two or more substances combine to form a single, more complex substance is known as:

Accepted Answer

Synthesis

Answer

Decomposition

Answer

Single displacement

Answer

Combustion

Question 3

The empirical formula of a compound represents its:

Accepted Answer

Elemental composition

Answer

Molecular composition

Answer

Mass composition

Answer

Structural formula

Question 4

The periodic table is organized by:

Accepted Answer

Atomic number

Answer

Atomic mass

Answer

Electron configuration

Answer

Density

Question 5

Which of the following is a metalloid?

Accepted Answer

Silicon

Answer

Iron

Answer

Gold

Answer

Sodium

Question 6

The process by which a substance changes from a liquid to a gas is called:

Accepted Answer

Evaporation

Answer

Condensation

Answer

Sublimation

Answer

Melting

Question 7

Which of the following is a quantitative measure?

Accepted Answer

Mass

Answer

Color

Answer

Solubility

Answer

Hardness

Question 8

What is the name of the process in which a solid changes directly into a gas?

Accepted Answer

Sublimation

Answer

Evaporation

Answer

Deposition

Answer

Condensation

Question 9

Which of the following factors does NOT affect the rate of a chemical reaction?

Accepted Answer

Presence of an inhibitor

Answer

Concentration of reactants

Answer

Temperature

Answer

Surface area of reactants

Question 10

Determine the empirical formula of a compound that contains 1 mole of carbon and 2 moles of oxygen.

Accepted Answer

CO2

Answer

CO

Answer

C2O

Answer

C2O2

Question 11

Which of the following is an example of a nuclear reaction?

Accepted Answer

Fission

Answer

Combustion

Answer

Neutralization

Answer

Electron transfer

Question 12

Which type of chemical bond involves the sharing of electrons between atoms?

Accepted Answer

Covalent bond

Answer

Ionic bond

Answer

Metallic bond

Answer

Hydrogen bond

Question 13

What type of reaction occurs when an acid and a base neutralize each other?

Accepted Answer

Neutralization

Answer

Combustion

Answer

Precipitation

Answer

Redox

Question 14

Which of the following is a characteristic property of metals?

Accepted Answer

High electrical conductivity

Answer

Low melting point

Answer

Transparency

Answer

Brittleness

Question 15

Which of the following is a physical change rather than a chemical change?

Accepted Answer

Melting of ice

Answer

Burning of wood

Answer

Rusting of iron

Answer

Digestion of food

Question 16

What is the molecular shape of methane (CH4) according to the VSEPR theory?

Accepted Answer

Tetrahedral

Answer

Linear

Answer

Trigonal planar

Answer

Octahedral

Question 17

Which of the following is the SI unit of energy?

Accepted Answer

Joule

Answer

Kelvin

Answer

Mole

Answer

Liter

Question 18

What is the pH of a solution with a hydrogen ion concentration of 1 x 10^-7 M?

Accepted Answer

7

Answer

0

Answer

14

Answer

Not enough information given

Question 19

Which of the following is NOT a type of chemical reaction?

Accepted Answer

Nuclear Fission

Answer

Combination

Answer

Decomposition

Answer

Oxidation-Reduction

Question 20

How does the periodic table help us predict the chemical properties of an element?

Accepted Answer

It groups elements with similar chemical properties together.

Answer

It shows the number of protons in an atom.

Answer

It shows how electrons are arranged in an atom's orbitals.

Question 21

Which property describes a characteristic that can be observed or measured without changing the composition of the substance?

Accepted Answer

Physical property

Answer

Chemical property

Answer

Atomic property

Answer

Molecular property

Question 22

Which chemical equation is balanced?

Accepted Answer

2H2 + O2 → 2H2O

Answer

2H + O → H2O

Answer

H2 + O2 → H2O

Answer

H + O2 → H2O

Question 23

Which molecule has zero polarity?

Accepted Answer

Carbon dioxide

Answer

Water

Answer

Hydrogen chloride

Answer

Ammonia

Question 24

Which state of matter has the strongest intermolecular forces?

Accepted Answer

Solid

Answer

Liquid

Answer

Gas

Answer

Plasma

Question 25

Which of the following best describes an element?

Accepted Answer

The simplest form of matter that cannot be broken down further by chemical means

Answer

Always exists in its pure, uncombined form

Answer

Has chemical properties that differ from its constituent atoms

Answer

Can be transformed into other elements through chemical reactions

Question 26

Which type of chemical bond results from the sharing of electrons between atoms?

Accepted Answer

Covalent bond

Answer

Ionic bond

Answer

Metallic bond

Answer

Hydrogen bond

Question 27

Which of these is NOT considered a primary state of matter?

Accepted Answer

Plasma

Answer

Solid

Answer

Liquid

Answer

Gas

Question 28

What distinguishes an atom from a molecule?

Accepted Answer

Molecules are composed of two or more atoms, while atoms are individual units.

Answer

Atoms are electrically charged, while molecules are electrically neutral.

Answer

Atoms are the smallest units of matter, while molecules are larger.

Answer

Molecules exist in gases, while atoms exist in solids.

Question 29

Identify the balanced chemical equation:

Accepted Answer

2H₂ + O₂ → 2H₂O

Answer

2H₂ + O → H₂O

Answer

H₂ + O₂ → H₂O + O

Answer

H₂ + 2O₂ → 2H₂O

Question 30

What is the hybridization of the carbon atom in methane?

Accepted Answer

sp3

Answer

sp

Answer

sp2

Answer

sp3d

Question 31

Identify the greenhouse gas:

Accepted Answer

Carbon dioxide

Answer

Oxygen

Answer

Nitrogen

Answer

Argon

Question 32

Which of these ionic compounds dissolves least in water?

Accepted Answer

Calcium carbonate (CaCO3)

Answer

Sodium chloride (NaCl)

Answer

Potassium nitrate (KNO3)

Answer

Ammonium chloride (NH4Cl)

Question 33

Which of the following statements describes a fundamental property of matter?

Accepted Answer

Matter has both mass and volume, regardless of its state.

Answer

Matter can be created or destroyed in chemical reactions.

Answer

Matter can be divided into smaller and smaller pieces indefinitely.

Answer

Matter always exists in a solid state.

Question 34

Which of the following processes is considered a chemical change?

Accepted Answer

Burning wood to produce ash and smoke

Answer

Melting ice into liquid water

Answer

Dissolving salt in water to form a saltwater solution

Answer

Condensation of water vapor on a cold surface

Question 35

Which of the following molecules possesses a polar character?

Accepted Answer

Water (H2O)

Answer

Carbon dioxide (CO2)

Answer

Methane (CH4)

Answer

Nitrogen gas (N2)

Question 36

Identify the characteristic property of a gas.

Accepted Answer

Indefinite shape and volume

Answer

Definite shape and volume

Answer

Definite shape but indefinite volume

Answer

Indefinite shape but definite volume

Question 37

Which of the following elements is radioactive?

Accepted Answer

Uranium

Answer

Carbon

Answer

Oxygen

Answer

Iron

Question 38

Which of the following gases contributes to the greenhouse effect?

Accepted Answer

Carbon dioxide

Answer

Oxygen

Answer

Nitrogen

Answer

Helium

Question 39

Which type of chemical bond involves the electrostatic attraction between oppositely charged ions?

Accepted Answer

Ionic bond

Answer

Covalent bond

Answer

Metallic bond

Answer

Hydrogen bond

Question 40

A substance with a molecular formula of NaCl represents a(n):

Accepted Answer

Compound

Answer

Element

Answer

Mixture

Answer

Solution

Question 41

The physical process where a gas transforms into a liquid is termed as:

Accepted Answer

Condensation

Answer

Evaporation

Answer

Sublimation

Answer

Deposition

Question 42

Which of the following characteristics is typically associated with metals?

Accepted Answer

High electrical conductivity

Answer

Low melting point

Answer

Brittle texture

Answer

Transparency

Question 43

According to the law of conservation of mass, in a closed system:

Accepted Answer

Mass can neither be created nor destroyed.

Answer

Energy can neither be created nor destroyed.

Answer

Momentum is conserved.

Answer

Volume remains constant.

Question 44

Which of the following elements belongs to the group of noble gases?

Accepted Answer

Helium

Answer

Oxygen

Answer

Carbon

Answer

Sodium

Question 45

A chemical reaction that releases heat into the surroundings is classified as an:

Accepted Answer

Exothermic reaction

Answer

Endothermic reaction

Answer

Electrolytic reaction

Answer

Spontaneous reaction

Question 46

Which state of matter has a definite shape and volume?

Accepted Answer

Solid

Answer

Liquid

Answer

Gas

Answer

Plasma

Question 47

What type of chemical bond involves the sharing of electron pairs between atoms?

Accepted Answer

Covalent bond

Answer

Ionic bond

Answer

Metallic bond

Answer

Hydrogen bond

Question 48

Which of the following is a balanced chemical equation?

Accepted Answer

2H2 + O2 → 2H2O

Answer

2H + O2 → H2O

Answer

H2 + 2O → H2O

Answer

H + O2 → H2O2

Question 49

Which subatomic particle carries a negative charge?

Accepted Answer

Electron

Answer

Proton

Answer

Neutron

Answer

Quark

Question 50

What is the hybridization of the carbon atom in methane (CH4)?

Accepted Answer

sp3

Answer

sp

Answer

sp2

Answer

sp3d