| 2,131,961 | Elements of the Periodic Table |
| 188,651 | Elements by Symbol Quiz |
| 180,584 | Periodic Table Quiz - First 20 Elements |
| 147,049 | Most Common Elements in the Human Body |
| 124,184 | Element... or Pokémon? |
| 106,682 | Elements - Sudden Death |
| 99,636 | Speed Symbol by Element |
| 91,272 | Periodic Table Elements A-Z |
| 90,909 | Chemical Elements with Short Names |
| 90,520 | Metals of Antiquity |
| 89,558 | Random Symbol to Element |
| 77,695 | Elements with One-Letter Symbols |
| 75,224 | Click the Chemical Element |
| 74,635 | Noble Gases |
| 68,874 | Periodic Table Elements Mentioned in the Bible |
| 67,742 | Name a Valid Element |
| 67,674 | Elements by Picture |
| 65,242 | Periodic Table Symbols Quiz |
| 61,978 | Elements that are Gases at Room Temperature |
| 60,858 | Periodic Table Elements by Clue #1 |
| 53,974 | Answers are Elements #2 |
| 52,092 | Answers are Elements #1 |
| 51,526 | Category Elimination - Elements |
| 50,630 | Elemental Words |
| 47,614 | Most Guessed Elements on JetPunk |
| 41,780 | One Letter Periodic Table Symbols - Sudden Death |
| 40,855 | First 30 Elements Periodic Table |
| 31,539 | Lightest Chemical Elements A-Z |
| 28,975 | First Twenty Elements - Sudden Death |
| 22,862 | Elements Named for Countries |
| 19,236 | First 40 Elements |
| 17,991 | Click Every Chemical Symbol |
| 14,396 | First 50 Elements |
| 13,759 | Elements of the Periodic Table by Symbol |
| 11,346 | Periodic Table Elements by Clue #2 |
| 10,782 | Random Elements on the Periodic Table |
| 10,486 | Periodic Table Symbols - Sudden Death |
| 9,886 | Random Element to Atomic Number |
| 9,208 | First 60 Elements |
| 8,937 | Periodic table challenge - IN ORDER! |
| 7,667 | The Elements of the Periodic Table |
| 6,978 | Periodic Table of Elements - in Order |
| 6,864 | Name Elements Containing Each Letter A-Z |
| 6,845 | Click the Chemical Element #2 |
| 6,586 | Countries That Discovered the Elements of the Periodic Table |
| 6,410 | All Elements of The Periodic Table - Sudden Death (Hard) |
| 5,059 | Elements of The Periodic Table - Sudden Death |
| 4,569 | Crossword - Elements |
| 4,220 | Random Sequential Elements on the Periodic Table |
| 4,155 | Periodic Table Quiz by Borders in 60 Seconds |
| 3,976 | Seven Strong Acids Quiz |
| 3,762 | Elements of the Periodic Table in Alphabetical Order |
| 3,667 | First 36 Periodic Table Elements |
| 3,409 | Common Chemical Compounds Quiz |
| 3,407 | Amino Acid Structures |
| 3,305 | Chemistry Elements (symbols) |
| 3,285 | Solve the Secret Element |
| 3,150 | Organic chemistry functional groups |
| 3,070 | Click the Element on the Periodic Table |
| 3,001 | Category Elimination - Elements (Expert) |
| 2,914 | Amino acids |
| 2,829 | Periodic Table of Elements spelling |
| 2,681 | Name that Gas! (Elements and Compounds in Chemistry) |
| 2,674 | Random Elements on the Empty Periodic Table |
| 2,557 | Click a Valid Periodic Table Element A-Z |
| 2,555 | Elements Word Search |
| 2,520 | First 20 elements of the Periodic table in 30 seconds |
| 2,493 | Element Names of Countries |
| 2,393 | The periodic table of Elements (Symbols) |
| 2,247 | Elements named after people |
| 2,244 | Periodic Table of Elements by Letter (ALL) |
| 2,168 | Elements Starting with C |
| 2,112 | Name a Valid Chemical Element |
| 2,050 | Click the Elements in Order |
| 2,016 | Chemical Elements with Single-Letter Symbols |
| 1,989 | Periodic Table of Elements by Letter in Symbol in 15 seconds |
| 1,974 | Periodic Table of Elements by Proximity |
| 1,962 | First 30 Chemical Elements Symbols |
| 1,899 | Elements by First 2 Letters in 90 Seconds |
| 1,890 | Countries of the World - by Element Symbols |
| 1,877 | Elements 21-40 Quiz |
| 1,839 | Alkanes - Organic Chemistry |
| 1,849 | Amino Acids |
| 1,801 | Name the Metal Alloy |
| 1,695 | Chemistry quiz |
| 1,685 | Elements Starting with A |
| 1,635 | Countries By The Periodic Table |
| 1,560 | Elements named after places |
| 1,536 | Word Scramble - Elements |
| 1,515 | Elements Alphabetically ordered |
| 1,485 | Elements of the Periodic Table: Three Minute Sprint |
| 1,453 | Chemistry Vocabulary |
| 1,327 | Elements Starting with S |
| 1,304 | Most Abundant Metals in Earth's Crust and the Solar System |
| 1,288 | Chemical Elements By Symbol |
| 1,263 | Elements Starting with B |
| 1,253 | Periodic Table by Borders - 90 Seconds |
| 1,249 | Elemental Boggle |
| 1,219 | Chemistry - GCSE Definitions (Core) |
| 1,170 | Lanthanides and Actinides of the Periodic Table |
| 1,161 | Classical and Medieval Elements (Greek, Chinese, Buddhist, Alchemy) |
| 1,130 | Nobel Prize Winners In Chemistry |
| 1,112 | Chemistry Decoder |
| 1,110 | Periodic table |
| 1,098 | Elements of the Periodic Table by Symbol |
| 1,095 | Elements Starting with T |
| 1,089 | Elements Starting with P |
| 1,082 | Periodic Table of Elements by Year of Discovery Proximity in 90 Seconds |
| 1,079 | Periodic Table Elements that don't End in - um |
| 1,075 | Chemistry Elements (names) |
| 1,057 | Essential Vitamins and Minerals (Micronutrients) |
| 1,050 | Elements Breakdown Puzzle #1 |
| 1,021 | Anagram Chain - Elements |
| 1,019 | First Twenty Elements - In Order |
| 1,015 | Random 20 Elements - Atomic Numbers |
| 1,004 | Periodic Table with Alphabetic Answer Table |
| 960 | Periodic Table of Elements Map Quiz |
| 955 | 6 Elements in periodic table by random number |
| 947 | Elements Starting with N |
| 923 | Element Etymologies: Places |
| 918 | One Syllable Chemical Elements |
| 872 | Composition of the Universe |
| 859 | Elements Starting with G, H |
| 841 | Elements Starting with R |
| 840 | Elemental Countries |
| 838 | Elements Created by Only Four Letters |
| 806 | Elements Starting with L |
| 801 | Most Common Elements in the Ocean |
| 793 | Top Five Countries By Metal Production |
| 791 | Drugs that are Painkillers (Analgesic/Anesthetic Medicines) |
| 769 | Chemical Compounds by Formula |
| 766 | Chemical Elements |
| 758 | Name the 18 Non-Metal Elements |
| 757 | Elemental Words #2 |
| 756 | Elements Starting with E, F |
| 752 | Common Polyatomic Ions (Easy) |
| 743 | Elements Starting with M |
| 727 | Elemental Anagrams |
| 721 | Random Element to Symbol |
| 713 | U.S. States to Elements Quiz |
| 690 | Most Common Elements on Earth |
| 670 | Elements with a Unique First Letter |
| 642 | Geography from Periodic Elements |
| 620 | Five Letter Elements |
| 617 | Four Letter Elements |
| 606 | Name that Liquid! (Elements, Compounds, Mixtures in Chemistry) |
| 603 | Elements with a Single Letter in their Symbol - Sudden Death |
| 579 | Chemistry - Hydrocarbons |
| 570 | SI-Prefixes |
| 563 | Elements Breakdown Puzzle #2 |
| 543 | First 20 elements |
| 536 | Complete the Periodic Table - Map Quiz #1 |
| 496 | Longest Element Names A-Z |
| 495 | Most Common Elements In Human Body |
| 481 | Chemical Elements with 6-Letter Names |
| 479 | Add A Letter - Make an Element |
| 453 | Chemical Elements with Double Letters |
| 446 | First 12 Elements Discovered |
| 440 | Word Scramble - Elements |
| 434 | Complete the Periodic Table - Map Quiz #2 |
| 432 | Lyrics of The Periodic Table Song (AsapSCIENCE 2018 updated ver.) |
| 431 | Elements by Pictures |
| 421 | Periodic Table of Elements - Hard Version |
| 413 | Composition of the Human Body (Compounds/Molecules) |
| 413 | Elements Without Their Vowels |
| 381 | Element Double Puzzle |
| 378 | Shortest Element Names A-Z |
| 373 | Most Abundant Elements in the Solar System |
| 366 | Elements that Stars Fuse |
| 360 | Elements Beginning with the Letters of JETPUNK |
| 352 | Elements which are not in Tom Lehrer's "The Elements" |
| 342 | States of Matter (Phases of Matter) |
| 340 | Metals of Antiquity (Sudden Death) |
| 322 | Top Uranium Producing Countries |
| 316 | Chemical Elements in the Answer |
| 315 | Element Mash-Up Puzzle: Countries |
| 307 | Click the Common Name - Chemicals |
| 292 | Border Crossing (Periodic Table Version) |
| 287 | Composition of Seawater (Elements) 🌊 |
| 276 | Elemental Categories of the Periodic Table |
| 276 | Elemental Words - Countries Edition |
| 257 | Etymologies of elements (picture quiz) |
| 256 | 20 Most Common Elements in the Human Body |
| 255 | Most Expensive Substances (by Weight) |
| 249 | Countries that Produce the Most of an Element |
| 242 | Element Mash-Up Puzzle: Capital Cities |
| 217 | The LSD Quiz |
| 216 | Elemental Words - Countries Edition #2 |
| 214 | Three Real and One Fake - Elements |
| 213 | Elements that Beat Iron |
| 208 | Scientific Names of Compounds By Atomic Symbol |
| 207 | Elements Plants Need to Grow (Minerals/Nutrients) |
| 196 | Elements that Start with "A" |