| 2,248,032 | Elements of the Periodic Table |
| 197,666 | Elements by Symbol |
| 189,035 | Periodic Table Quiz - First 20 Elements |
| 152,088 | Most Common Elements in the Human Body |
| 132,875 | Elements - Sudden Death |
| 132,106 | Element... or Pokémon? |
| 104,940 | Speed Symbol by Element |
| 103,072 | Periodic Table Elements A-Z |
| 94,382 | Chemical Elements with Short Names |
| 93,593 | Metals of Antiquity |
| 93,239 | Random Symbol to Element |
| 81,903 | Elements with One-Letter Symbols |
| 80,731 | Click the Chemical Element |
| 78,415 | Noble Gases |
| 72,636 | Periodic Table Symbols |
| 70,785 | Periodic Table Elements Mentioned in the Bible |
| 70,163 | Name a Valid Element |
| 70,068 | Elements by Picture |
| 64,726 | Elements that are Gases at Room Temperature |
| 62,603 | Periodic Table Elements by Clue #1 |
| 56,194 | One Letter Periodic Table Symbols - Sudden Death |
| 55,090 | Answers are Elements #2 |
| 53,812 | Category Elimination - Elements |
| 52,874 | Answers are Elements #1 |
| 52,378 | Elemental Words |
| 48,230 | Most Guessed Elements on JetPunk |
| 42,295 | First 30 Elements Periodic Table |
| 36,956 | First Twenty Elements - Sudden Death |
| 32,030 | Lightest Chemical Elements A-Z |
| 24,789 | Elements Named for Countries |
| 21,215 | First 40 Elements |
| 19,676 | Click Every Chemical Symbol |
| 18,108 | Elements Whose First Letter Doesn't Match the Symbol |
| 15,530 | First 50 Elements |
| 13,923 | Elements of the Periodic Table by Symbol |
| 13,849 | Name the Metal Alloy |
| 13,108 | Periodic Table Symbols - Sudden Death |
| 12,227 | Periodic Table Elements by Clue #2 |
| 11,397 | Random Elements on the Periodic Table |
| 10,620 | Random Element to Atomic Number |
| 9,527 | First 60 Elements |
| 8,973 | Periodic table challenge - IN ORDER! |
| 8,275 | Periodic Table of Elements - in Order |
| 7,752 | The Elements of the Periodic Table |
| 7,699 | All Elements of The Periodic Table - Sudden Death (Hard) |
| 7,618 | Name Elements Containing Each Letter A-Z |
| 7,341 | Click the Chemical Element #2 |
| 6,791 | Countries That Discovered the Elements of the Periodic Table |
| 5,543 | Elements of The Periodic Table - Sudden Death |
| 4,986 | Crossword - Elements |
| 4,910 | Click the Element on the Periodic Table |
| 4,478 | Random Sequential Elements on the Periodic Table |
| 4,288 | Periodic Table Quiz by Borders in 60 Seconds |
| 4,147 | Seven Strong Acids Quiz |
| 4,135 | Amino Acid Structures |
| 3,971 | First 36 Periodic Table Elements |
| 3,883 | Elements of the Periodic Table in Alphabetical Order |
| 3,679 | Click a Valid Periodic Table Element A-Z |
| 3,662 | Chemistry Elements (symbols) |
| 3,600 | Solve the Secret Element |
| 3,481 | Common Chemical Compounds Quiz |
| 3,399 | Name That Gas! (Elements and Compounds in Chemistry) |
| 3,270 | Organic chemistry functional groups |
| 3,099 | Category Elimination - Elements (Expert) |
| 2,948 | Amino acids |
| 2,836 | Random Elements on the Empty Periodic Table |
| 2,658 | Elements Word Search |
| 2,545 | Element Names of Countries |
| 2,533 | First 20 elements of the Periodic table in 30 seconds |
| 2,449 | The periodic table of Elements (Symbols) |
| 2,435 | Periodic Table of Elements by Letter (ALL) |
| 2,346 | Click the Elements in Order |
| 2,275 | Elements named after people |
| 2,202 | Elements Starting with C |
| 2,185 | Name a Valid Chemical Element |
| 2,178 | Countries of the World - by Element Symbols |
| 2,062 | Periodic Table of Elements by Letter in Symbol in 15 seconds |
| 2,052 | Periodic Table of Elements by Proximity |
| 2,032 | Chemical Elements with Single-Letter Symbols |
| 1,970 | First 30 Chemical Elements Symbols |
| 1,967 | Elements by First 2 Letters in 90 Seconds |
| 1,965 | Elements 21-40 Quiz |
| 1,944 | Amino Acids |
| 1,920 | Alkanes - Organic Chemistry |
| 1,813 | Elements Alphabetically ordered |
| 1,741 | Top Five Countries By Metal Production |
| 1,736 | Chemistry quiz |
| 1,716 | Elements Starting with A |
| 1,688 | Word Scramble - Elements |
| 1,678 | Chemistry Vocabulary |
| 1,672 | Countries By The Periodic Table |
| 1,576 | Elements named after places |
| 1,510 | Elements of the Periodic Table: Three Minute Sprint |
| 1,433 | Most Abundant Metals in Earth's Crust and the Solar System |
| 1,366 | Periodic Table by Borders - 90 Seconds |
| 1,345 | Elements Starting with S |
| 1,332 | Chemical Elements By Symbol |
| 1,283 | Classical and Medieval Elements (Greek, Chinese, Buddhist, Alchemy) |
| 1,283 | Elements Starting with B |
| 1,267 | Elemental Boggle |
| 1,261 | Chemistry - GCSE Definitions (Core) |
| 1,215 | Lanthanides and Actinides of the Periodic Table |
| 1,212 | Chemistry Elements (names) |
| 1,182 | Vitamins and Minerals (Micronutrients) |
| 1,173 | Elements of the Periodic Table by Symbol |
| 1,149 | Elements Breakdown Puzzle #1 |
| 1,146 | Periodic Table of Elements by Year of Discovery Proximity in 90 Seconds |
| 1,139 | Chemistry Decoder |
| 1,137 | Nobel Prize Winners In Chemistry |
| 1,110 | Periodic table |
| 1,109 | Elements Starting with T |
| 1,107 | Elements Starting with P |
| 1,082 | Periodic Table Elements that don't End in - um |
| 1,082 | Periodic Table with Alphabetic Answer Table |
| 1,070 | 6 Elements in periodic table by random number |
| 1,068 | Name That Liquid! (Elements, Compounds, Mixtures in Chemistry) |
| 1,048 | Anagram Chain - Elements |
| 1,038 | Random 20 Elements - Atomic Numbers |
| 1,029 | First Twenty Elements - In Order |
| 988 | Periodic Table of Elements Map Quiz |
| 960 | Elements Starting with N |
| 960 | Element Etymologies: Places |
| 941 | Drugs that are Painkillers (Analgesic/Anesthetic Medicines) |
| 927 | One Syllable Chemical Elements |
| 924 | Composition of the Universe |
| 917 | Periodic Table of the Elements - Click Quiz |
| 911 | Elements Created by Only Four Letters |
| 889 | 6-Letter Elements "Hangman" - Randomized |
| 869 | Elements Starting with G, H |
| 853 | Elements Starting with R |
| 844 | Elemental Countries |
| 843 | Chemistry Terms A-Z |
| 825 | Most Common Elements in the Ocean |
| 815 | Elements Starting with L |
| 788 | Chemical Compounds by Formula |
| 786 | Elements with a Unique First Letter |
| 777 | Chemical Elements |
| 770 | Elements Starting with E, F |
| 768 | Elemental Words #2 |
| 768 | Name the 18 Non-Metal Elements |
| 762 | Common Polyatomic Ions (Easy) |
| 760 | Elements Starting with M |
| 748 | Random Element to Symbol |
| 743 | Elemental Anagrams |
| 724 | U.S. States to Elements Quiz |
| 706 | Most Common Elements on Earth |
| 666 | Elements with a Single Letter in their Symbol - Sudden Death |
| 658 | Geography from Periodic Elements |
| 657 | Five Letter Elements |
| 642 | Four Letter Elements |
| 626 | 9-Letter Elements "Hangman" - Randomized |
| 614 | SI-Prefixes |
| 604 | Elements Breakdown Puzzle #2 |
| 597 | Chemistry - Hydrocarbons |
| 552 | Complete the Periodic Table - Map Quiz #1 |
| 550 | 7-Letter Elements "Hangman" - Randomized |
| 550 | First 20 elements |
| 522 | Longest Element Names A-Z |
| 518 | 8-Letter Elements "Hangman" - Randomized |
| 503 | Most Common Elements In Human Body |
| 489 | Chemical Elements with 6-Letter Names |
| 490 | Add A Letter - Make an Element |
| 479 | First 12 Elements Discovered |
| 464 | Chemical Elements with Double Letters |
| 459 | Word Scramble - Elements |
| 457 | Composition of the Human Body (Compounds/Molecules) |
| 453 | Metals of Antiquity (Sudden Death) |
| 449 | Most Abundant Elements in the Solar System |
| 444 | Elements by Pictures |
| 443 | Periodic Table of Elements - Hard Version |
| 440 | Elements Without Their Vowels |
| 439 | Complete the Periodic Table - Map Quiz #2 |
| 437 | Lyrics of The Periodic Table Song (AsapSCIENCE 2018 updated ver.) |
| 412 | Element Double Puzzle |
| 406 | Shortest Element Names A-Z |
| 378 | Elements Beginning with the Letters of JETPUNK |
| 375 | Elements that Stars Fuse |
| 371 | States of Matter (Phases of Matter) |
| 354 | Elements of the Periodic Table - Symbols |
| 354 | Elements which are not in Tom Lehrer's "The Elements" |
| 344 | Chemical Elements in the Answer |
| 343 | Element Mash-Up Puzzle: Countries |
| 332 | Top Uranium Producing Countries |
| 330 | Composition of Seawater (Elements) 🌊 |
| 323 | Click the Common Name - Chemicals |
| 298 | Elemental Categories of the Periodic Table |
| 292 | Border Crossing (Periodic Table Version) |
| 288 | Element Symbols - Sudden Death |
| 286 | Countries that Produce the Most of an Element |
| 283 | Elemental Words - Countries Edition |
| 270 | Etymologies of elements (picture quiz) |
| 266 | 20 Most Common Elements in the Human Body |
