Periodic Table Quiz
Choose a quiz mode: guess the symbol, guess the name, or guess the atomic number. Answer the 10 multiple-choice questions to get your score. Click 'Play Again' to retry with a new random set.
Why Learn the Periodic Table?
The periodic table is the fundamental reference of chemistry. Published by Dmitri Mendeleev in 1869, it organizes all 118 confirmed elements by increasing atomic number and recurring chemical properties. Understanding it is essential for chemistry, biology, medicine, materials science, and environmental science. Regular quizzing is one of the fastest ways to memorize symbols, names, and atomic numbers.
How the Quiz Works
This quiz presents 10 randomly selected elements in three interchangeable modes:
- Guess the Symbol — You see the full element name and must identify its chemical symbol (e.g., Iron → Fe).
- Guess the Name — You see the chemical symbol and must name the element (e.g., Au → Gold).
- Guess the Atomic Number — You see a number and must identify which element it belongs to (e.g., 79 → Gold).
Each question offers four multiple-choice answers. Your score is shown at the end, with a percentage.
Element Categories Covered
| Category | Examples | Key Property |
|---|---|---|
| Alkali Metals | Li, Na, K | Highly reactive, soft, low melting point |
| Alkaline Earth Metals | Be, Mg, Ca | Reactive, harder than alkali metals |
| Transition Metals | Fe, Cu, Au, Ag | Good conductors, form colored compounds |
| Post-Transition Metals | Al, Sn, Pb | Softer, lower melting points than transition metals |
| Metalloids | B, Si | Semiconductor properties |
| Nonmetals | H, C, N, O, S | Poor conductors, often form anions |
| Halogens | F, Cl, Br, I | Very reactive, form salts with metals |
| Noble Gases | He, Ne, Ar, Kr, Xe | Inert, full valence shells |
| Actinides | U | Radioactive, heavy |
Common Symbols With Non-Obvious Origins
Several element symbols come from Latin or other historical names rather than the English name:
| Symbol | Name | Origin |
|---|---|---|
| Fe | Iron | Latin: Ferrum |
| Cu | Copper | Latin: Cuprum |
| Ag | Silver | Latin: Argentum |
| Au | Gold | Latin: Aurum |
| Hg | Mercury | Latin: Hydrargyrum (liquid silver) |
| Pb | Lead | Latin: Plumbum |
| Sn | Tin | Latin: Stannum |
| K | Potassium | Latin: Kalium |
| Na | Sodium | Latin: Natrium |
Study Tips for the Periodic Table
- Learn groups first. The 18 vertical columns share chemical properties. Memorize the Alkali Metals (Group 1) and Noble Gases (Group 18) as anchors.
- Use mnemonics. For the first 20 elements: "Hi He Li Be, Born Curled Neatly, Other Friendly Neighbors, Not Married Always Silly, Picking Smelly Chlorine Argued Kalium Calcium."
- Practice daily. Short, frequent quiz sessions (5–10 minutes) are more effective than long cramming sessions.
- Focus on the everyday elements. The first 20 elements plus common metals (Fe, Cu, Ag, Au, Hg, Pb) cover the vast majority of real-world chemistry.
Frequently Asked Questions
How many elements are in the periodic table?
As of 2024, the periodic table contains 118 confirmed elements. Elements 1–94 occur naturally; elements 95–118 are synthetic (made in laboratories).
What is an atomic number?
The atomic number (symbol Z) is the number of protons in an atom's nucleus. It uniquely identifies each element. Hydrogen has Z = 1; Gold has Z = 79.
Why do some elements have symbols that don't match their names?
Many symbols come from Latin or German names used in historical chemistry. For example, Iron's symbol Fe comes from the Latin word 'Ferrum', and Gold's symbol Au comes from 'Aurum'.
What is the most abundant element in the universe?
Hydrogen (H, Z=1) makes up about 75% of all ordinary matter in the universe by mass. Helium accounts for most of the remaining 25%.
What is the most abundant element in Earth's crust?
Oxygen (O, Z=8) is the most abundant element in Earth's crust by mass (~46%), mostly found in silicate minerals and water. Silicon (Si, Z=14) is second at ~28%.