A Beginner's Guide to Science Trivia: Physics, Biology, and Chemistry Basics

Science trivia can feel intimidating if you have not studied a subject since school, but the majority of science quiz questions actually draw from a fairly small set of foundational concepts. Here is a quick refresher across the three subjects that dominate most science rounds.

Physics: Motion, Energy, and Light

Most physics trivia centers on a handful of ideas: Newton's laws of motion (an object in motion stays in motion unless acted on by a force), the relationship between energy and matter, and the behavior of light and sound as waves. Knowing basic facts — that light travels faster than sound, that gravity accelerates all falling objects equally regardless of mass in a vacuum — solves a surprising number of "trick" questions.

Biology: Cells, Genetics, and Evolution

Biology trivia usually falls into three buckets: cellular biology (the basic building blocks of life), genetics (how traits are inherited via DNA), and evolution (how species change over generations through natural selection). Human anatomy also frequently appears, covering major organs and body systems and their primary functions.

Chemistry: Elements, Reactions, and Everyday Materials

Chemistry trivia leans heavily on the periodic table — knowing common element symbols like Au (gold), Fe (iron), and Na (sodium) covers a large share of chemistry questions. The rest typically covers basic reaction types, states of matter, and the chemistry behind everyday materials and phenomena, like why ice floats or why metals conduct electricity.

Physics Facts to Know

• Light travels at about 300,000 kilometres per second. Sound travels through air at only about 343 metres per second, which is why you see lightning before you hear thunder.
• Newton's three laws cover inertia, the link between force, mass and acceleration, and the rule that every action has an equal and opposite reaction.
• Gravity near the surface of the Earth accelerates falling objects at about 9.8 metres per second every second.
• The lowest possible temperature is absolute zero, which is minus 273.15 degrees Celsius, or zero on the Kelvin scale.

Units are a favourite source of questions, and most are named after scientists: the newton measures force, the joule energy, the watt power, the volt electric potential, the ampere electric current, the ohm resistance, the hertz frequency and the pascal pressure.

Chemistry Facts to Know

• The periodic table was first arranged by the Russian chemist Dmitri Mendeleev in 1869. Today it contains 118 elements.
• Hydrogen is the lightest element and the most abundant in the universe.
• Symbols that come from Latin names cause the most mistakes: Ag is silver, Pb is lead, K is potassium, Hg is mercury and W is tungsten.
• Mercury is the only metal that is liquid at room temperature.
• Water is H2O, table salt is NaCl and carbon dioxide is CO2.
• On the pH scale, 7 is neutral. Lower numbers are acids and higher numbers are bases.
• Diamond and graphite are both pure carbon, arranged in different ways.
• The air around us is about 78 percent nitrogen and 21 percent oxygen.

Biology Facts to Know

• The cell is the basic unit of life, and the mitochondria are known as its powerhouse.
• The double-helix structure of DNA was described in 1953 by James Watson and Francis Crick, building on X-ray images produced by Rosalind Franklin.
• Humans have 23 pairs of chromosomes.
• An adult has 206 bones. The longest is the femur in the thigh, and the smallest is the stapes in the ear.
• The heart has four chambers, and the skin is the largest organ of the body.
• Red blood cells carry oxygen using haemoglobin. Insulin, which controls blood sugar, is made in the pancreas.
• Plants make food from sunlight, water and carbon dioxide in a process called photosynthesis, and release oxygen.

Space and Earth

• The solar system has eight planets. Pluto has been classed as a dwarf planet since 2006.
• Mercury is closest to the Sun, but Venus is the hottest planet because of its thick atmosphere.
• Jupiter is the largest planet, and Saturn is known for its rings.
• Light from the Sun takes about eight minutes to reach the Earth.
• The Earth has three main layers: the crust, the mantle and the core.

Scientists and Their Discoveries

• Alexander Fleming: penicillin, 1928
• Edward Jenner: the smallpox vaccine
• Louis Pasteur: pasteurisation and the germ theory of disease
• Gregor Mendel: the laws of inheritance, from experiments with pea plants
• Michael Faraday: electromagnetic induction, the principle behind the electric generator
• Ernest Rutherford: the atomic nucleus
• Karl Landsteiner: the human blood groups

Trick Questions and Common Mistakes

• The Sun is a star, not a planet.
• Bats and whales are mammals. A bat is not a bird and a whale is not a fish.
• Spiders are not insects. They have eight legs and belong to the arachnids.
• Heavy objects do not fall faster than light ones. Without air resistance they land together.
• Sound cannot travel through empty space, because it needs a medium such as air or water.
• The Moon does not produce light. It reflects the light of the Sun.

A Simple Study Plan

1. Learn the first twenty elements and the Latin-named symbols.
2. Memorise the list of units and the scientists they honour.
3. Go through the human body one system at a time.
4. Learn the planets in order from the Sun.
5. Match each famous scientist to one discovery.

Those five steps cover a very large share of the science questions asked in general quizzes.

How to Practice Efficiently

Rather than trying to re-learn an entire science curriculum, focus on recognizing patterns: many science trivia questions reward understanding a general principle (gravity, natural selection, atomic structure) rather than memorizing an obscure fact. Quizlino's Science category is built around exactly this idea — every question comes with a short explanation so each round doubles as a quick refresher, not just a test.