Best Chemistry Trivia Questions for a Fun Science Challenge

Chemistry trivia has a sneaky way of pulling people in. It starts off easy with things like water, gold, and the periodic table, then suddenly you are trying to remember atomic numbers, reaction types, and which scientist discovered the electron.

In this trivia, some questions will feel instantly obvious. Others might make you pause and say, “Wait… I definitely learned this once.” That is the sweet spot for good trivia, and chemistry delivers it better than most subjects.

Easy Chemistry Trivia Questions

What gas do humans need to breathe to survive?

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Oxygen

What is the chemical symbol for gold?

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Au

What is the chemical symbol for silver?

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Ag

What is the chemical symbol for sodium?

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Na

What is the chemical symbol for potassium?

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K

What is the chemical symbol for iron?

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Fe

What is the chemical symbol for carbon?

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C

What is the chemical symbol for oxygen?

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O

What is the chemical symbol for hydrogen?

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H

What is the pH of a neutral substance?

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7

What is the name of the chart that organizes all chemical elements?

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The periodic table

What is the smallest unit of an element that still keeps its properties?

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An atom

What is the center of an atom called?

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The nucleus

Which subatomic particle has a positive charge?

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Proton

Which subatomic particle has a negative charge?

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Electron

Which subatomic particle has no charge?

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Neutron

What do we call a substance made of two or more elements chemically combined?

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A compound

What do we call a substance made of only one kind of atom?

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An element

What state of matter has a fixed shape and fixed volume?

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Solid

Periodic Table Trivia Questions

Who created the first widely recognized periodic table?

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Dmitri Mendeleev

What is the first element on the periodic table?

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Hydrogen

What is the second element on the periodic table?

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Helium

Which element has the symbol He?

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Helium

Which element has the symbol N?

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Nitrogen

Which element has the symbol Cl?

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Chlorine

Which element has the symbol Ca?

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Calcium

Which element has the symbol Cu?

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Copper

Which element has the symbol Pb?

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Lead

Which element has the symbol Sn?

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Tin

Which element is commonly used in pencils, though not in the form people often assume?

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Carbon, in the form of graphite

Which element is the main gas in balloons that do not sink?

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Helium

Which metal is liquid at room temperature?

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Mercury

Which element is most associated with diamonds?

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Carbon

Which element gives table salt one of its two parts?

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Sodium or chlorine

Which family of elements includes helium, neon, and argon?

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Noble gases

Which group of elements is known for being highly reactive and includes sodium and potassium?

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Alkali metals

What is the atomic number of carbon?

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6

What is the atomic number of oxygen?

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8

What is the atomic number of hydrogen?

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1

Atoms and Particles Trivia Questions

What determines what element an atom is?

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The number of protons

What do we call atoms of the same element with different numbers of neutrons?

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Isotopes

What do we call a charged atom?

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An ion

What kind of ion has a positive charge?

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Cation

What kind of ion has a negative charge?

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Anion

Where are electrons found in an atom?

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In the electron cloud around the nucleus

Which particles in the nucleus help add mass but no charge?

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Neutrons

Which subatomic particle is the lightest of the three main ones?

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Electron

What is the mass number of an atom made from?

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Protons plus neutrons

What do electrons do in chemical bonding?

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They are shared, gained, or lost

Chemical Reactions Trivia Questions

What do we call the starting substances in a chemical reaction?

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Reactants

What do we call the substances formed in a chemical reaction?

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Products

What type of reaction happens when something burns in oxygen?

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Combustion

What gas is produced when an acid reacts with many carbonates?

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Carbon dioxide

What is the common name for HCl in water?

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Hydrochloric acid

What type of reaction happens when an acid and base react to form water and a salt?

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Neutralization

What is the term for a reaction that gives off heat?

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Exothermic

What is the term for a reaction that absorbs heat?

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Endothermic

What do we call the speeding up of a chemical reaction?

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Catalysis

What substance speeds up a reaction without being used up?

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A catalyst

What law says matter cannot be created or destroyed in an ordinary chemical reaction?

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The law of conservation of mass

What do we call the breakdown of a compound into simpler substances?

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Decomposition

What type of reaction combines smaller substances into a larger one?

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Synthesis

What gas is often released when metals react with acids?

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Hydrogen

What visible sign may show that a chemical reaction has happened?

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Color change, gas formation, temperature change, or a precipitate

Acids, Bases, and Solutions Trivia Questions

What do acids release in water?

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Hydrogen ions

What do bases release in water according to the Arrhenius idea?

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Hydroxide ions

What pH range is considered acidic?

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Less than 7

What pH range is considered basic or alkaline?

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Greater than 7

What scale is used to measure acidity and alkalinity?

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The pH scale

What do we call a mixture in which one substance is dissolved evenly in another?

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A solution

In a saltwater solution, what is the dissolved substance called?

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The solute

In a saltwater solution, what is the substance doing the dissolving called?

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The solvent

What is the most common solvent in chemistry?

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Water

What do we call a solution with a low amount of dissolved substance?

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Dilute

What do we call a solution with a high amount of dissolved substance?

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Concentrated

What paper is commonly used to test pH in simple experiments?

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Litmus paper

What color does blue litmus paper turn in an acid?

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Red

What color does red litmus paper stay or turn in a base?

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Blue

What is a substance that resists changes in pH called?

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A buffer

Famous Chemistry Scientists Trivia

Which scientist is known for the periodic table?

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Dmitri Mendeleev

Which scientist proposed the modern atomic theory in the early 1800s?

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John Dalton

Which scientist discovered the electron?

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J. J. Thomson

Which scientist proposed the nuclear model of the atom after the gold foil experiment?

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Ernest Rutherford

Which scientist is closely linked to radioactivity research alongside Pierre Curie?

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Marie Curie

Which scientist developed the planetary model of the atom with energy levels?

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Niels Bohr

Which scientist is associated with the uncertainty principle?

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Werner Heisenberg

Which scientist helped develop the concept of wave behavior in particles?

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Louis de Broglie

Which scientist is known for gas law work and pressure-volume relationships?

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Robert Boyle

Which scientist is known for the law that volume increases with temperature in gases?

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Jacques Charles

Harder Chemistry Trivia Questions

What is the chemical formula for carbon dioxide?

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CO2

What is the chemical formula for methane?

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CH4

What is the chemical formula for ammonia?

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NH3

What is the chemical formula for table salt?

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NaCl

What is the name of the process where a liquid changes into a gas?

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Evaporation or vaporization

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

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Deposition

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

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Sublimation

What type of bond involves the sharing of electrons?

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Covalent bond

What type of bond usually forms when electrons are transferred from one atom to another?

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Ionic bond

What type of bond is found in metals where electrons move freely through a lattice?

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Metallic bond

How To Use This Trivia

A simple way to run this quiz is to split it into five rounds of 20 questions each. Start with easy symbols and basic chemistry facts, move into the periodic table and atoms, then finish with reactions, acids and bases, and harder bonding or scientist questions.

Rowan