| Elements of the Periodic Table | 0 | - | 5.00 | 2,225,218 |
| Elements by Symbol | 0 | - | 4.92 | 195,906 |
| Speed Symbol by Element | 0 | - | 4.91 | 103,847 |
| Chemical Elements with Short Names | 0 | - | 4.81 | 93,598 |
| Noble Gases | 0 | - | 4.89 | 77,600 |
| Elements that are Gases at Room Temperature | 0 | - | 4.86 | 64,163 |
| Periodic Table Symbols | 0 | - | 4.97 | 71,227 |
| Elements with One-Letter Symbols | 0 | - | 4.83 | 81,062 |
| Elements Whose First Letter Doesn't Match the Symbol | 0 | - | 4.86 | 17,048 |
| Elemental Words | 0 | - | 4.96 | 52,054 |
| Metals of Antiquity | 0 | - | 4.94 | 93,025 |
| First Twenty Elements - Sudden Death | 0 | - | 4.82 | 35,161 |
| Elements - Sudden Death | 0 | - | 4.91 | 127,098 |
| One Letter Periodic Table Symbols - Sudden Death | 0 | - | 4.88 | 54,136 |
| Lightest Chemical Elements A-Z | 0 | - | 4.57 | 31,931 |
| Periodic Table Quiz - First 20 Elements | 0 | - | 4.73 | 187,628 |
| Periodic Table Elements by Clue #1 | 0 | - | 4.80 | 62,262 |
| International Scientific Units | 0 | - | 4.95 | 155,697 |
| Electromagnetic Spectrum | 0 | - | 4.93 | 62,360 |
| Random Symbol to Element | 0 | - | 4.88 | 92,385 |
| Periodic Table Elements by Clue #2 | 0 | - | 4.52 | 12,043 |
| Click the Chemical Element | 0 | - | 4.96 | 79,497 |
| Most Common Elements in the Human Body | 0 | - | 4.74 | 150,981 |
| Name the Virus | 0 | - | 4.86 | 76,419 |
| Elements by Picture | 0 | - | 4.28 | 69,640 |
| Major Taxonomic Ranks | 0 | - | 4.63 | 79,980 |
| Famous Scientists | 0 | - | 4.57 | 42,504 |
| Answers are Elements #2 | 0 | - | 4.43 | 54,854 |
| Periodic Table Elements A-Z | 0 | - | 4.78 | 102,340 |
| Name a Valid Element | 0 | - | 4.64 | 69,671 |
| Scientific Names | 0 | - | 4.32 | 78,225 |
| Name the Metal Alloy | 0 | - | 4.70 | 13,400 |
| Things Named For People #3 - Science | 0 | - | 4.85 | 53,680 |
| Answers are Elements #1 | 0 | - | 4.30 | 52,717 |
| Most Guessed Elements on JetPunk | 0 | - | 4.56 | 48,116 |
| Element... or Pokémon? | 0 | - | 4.98 | 130,538 |
| Body Parts - Sudden Death #1 | 0 | - | 4.85 | 61,678 |
| Bones - Sudden Death | 0 | - | 4.95 | 49,447 |
| Famous Effects | 0 | - | 4.62 | 12,188 |
| Science Multiple Choice #1 | 0 | - | 4.53 | 86,142 |
| Periodic Table Elements Mentioned in the Bible | 0 | - | 4.77 | 70,373 |
| Category Elimination - Elements | 0 | - | 4.61 | 53,319 |
| Body Part Cliches | 0 | - | 4.43 | 123,142 |
| Bones of the Human Body | 0 | - | 4.52 | 40,774 |
| Medical Conditions Quiz | 0 | - | 4.78 | 123,410 |
| Simple Machines Quiz | 0 | - | 4.35 | 9,076 |
| Astronomy Quiz | 0 | - | 4.90 | 81,925 |
| Largest Objects in the Solar System | 0 | - | 4.99 | 136,043 |
| Solar System Trivia | 0 | - | 4.93 | 46,179 |
| Click the Planet | 0 | - | 4.96 | 90,457 |
| A Quiz About Diamonds | 0 | - | 4.60 | 11,442 |
| Science Multiple Choice #2 | 0 | - | 4.37 | 36,380 |
| Science Multiple Choice #3 | 0 | - | 4.39 | 34,428 |
| Environmental Issues | 0 | - | 4.54 | 26,747 |
| Name a Valid Answer - Science | 0 | - | 4.78 | 40,241 |
| Body Parts in History and Culture | 0 | - | 4.42 | 35,169 |
| Science General Knowledge #1 | 0 | - | 4.54 | 163,848 |
| Science General Knowledge #2 | 0 | - | 4.48 | 117,078 |
| Science General Knowledge #3 | 0 | - | 4.55 | 99,567 |
| Science Vocabulary #2 | 0 | - | 4.52 | 59,346 |
| Word Chain - Science | 0 | - | 4.59 | 54,466 |
| Diseases: Virus... or Bacteria? | 0 | - | 4.61 | 38,466 |
| Planets of the Solar System Quiz | 0 | - | 4.93 | 1,092,140 |
| Name the Constellations - With a Map | 0 | - | 4.92 | 35,717 |
| The Sun Quiz | 0 | - | 4.93 | 34,220 |
| First Names of Scientists | 0 | - | 4.50 | 56,563 |
| Groups of Two - Science | 0 | - | 4.26 | 48,168 |
| Science Vocabulary #1 | 0 | - | 4.34 | 71,491 |
| Science Vocabulary #3 | 0 | - | 4.31 | 51,726 |
| Science Decoder | 0 | - | 4.52 | 28,669 |
| Rocks and Minerals Picture Quiz | 0 | - | 4.48 | 29,193 |
| Animals - Taxonomy to Common Name | 0 | - | 4.80 | 28,141 |
| Science True or False | 0 | - | 4.35 | 40,056 |
| Medical Acronyms | 0 | - | 4.43 | 96,410 |
| Medical Vocabulary | 0 | - | 4.54 | 58,758 |
| Birthstones by Month | 0 | - | 4.41 | 80,520 |
| Citrus Fruits | 0 | - | 3.63 | 41,973 |
| "Ologies" Quiz | 0 | - | 4.34 | 96,446 |
| Albert Einstein Trivia | 0 | - | 4.58 | 18,326 |
| Brightest Natural Objects in the Sky | 0 | - | 4.45 | 27,893 |
| Planets By Picture Quiz | 0 | - | 4.49 | 56,323 |
| Planets - Multiple Choice | 0 | - | 4.41 | 53,251 |
| Body Part Words | 0 | - | 4.43 | 145,410 |
| Animal Anatomy Quiz | 0 | - | 4.39 | 59,707 |
| Word Scramble - Body Parts | 0 | - | 4.38 | 175,945 |
| Three Letter Body Parts | 0 | - | 4.40 | 205,358 |
| Human Body A-Z | 0 | - | 4.51 | 128,713 |
| One-Syllable Human Body Parts | 0 | - | 4.29 | 87,858 |
| Organs of the Human Body (with map) | 0 | - | 4.10 | 118,673 |
| Medical Specialties | 0 | - | 4.30 | 91,077 |
| The Diseases They Had | 0 | - | 4.15 | 13,925 |
| Diseases and Medical Conditions A-Z | 0 | - | 4.68 | 55,963 |
| 16 Questions that Prove that Physics Makes No Sense | 0 | - | 4.18 | 20,677 |
| The Pluto Quiz | 0 | - | 4.61 | 9,796 |
| Fish... or Not a Fish? | 0 | - | 4.39 | 43,262 |
| Astronomy Decoder | 0 | - | 4.50 | 37,888 |
| The Jupiter Quiz | 0 | - | 4.64 | 16,406 |
| The Mars Quiz | 0 | - | 4.55 | 18,593 |
| The Saturn Quiz | 0 | - | 4.54 | 11,516 |
| Dumb it Down Doc | 0 | - | 4.13 | 64,782 |
| Signs of the Zodiac Quiz | 0 | - | 4.45 | 224,094 |
| Name the Constellations | 0 | - | 4.58 | 44,740 |
| Astronomy True or False | 0 | - | 4.39 | 36,306 |
| Songs with Body Parts in the Title | 0 | - | 4.31 | 215,068 |
| Most Common Body Part Words | 0 | - | 3.88 | 31,563 |
| Body Parts - No Vowels | 0 | - | 4.15 | 25,137 |
| The Venus Quiz | 0 | - | 4.21 | 6,897 |
| U.S. States with Glaciers | 0 | - | 4.61 | 25,082 |
| Largest Countries Without Glaciers | 0 | - | 4.92 | 35,118 |
| Elements Named for Countries | 0 | - | 4.52 | 24,465 |
| Recommended Childhood Vaccines for Americans | 0 | - | 4.42 | 14,661 |
| Animals by Skeleton Image | 0 | - | 4.80 | 46,089 |
| The Voyage of Darwin - Animated Map Quiz | 0 | - | 4.99 | 14,387 |
| Countries with the Most HIV | 0 | - | 4.46 | 44,350 |
| Countries with the Most Malaria Deaths | 0 | - | 4.45 | 44,981 |
| U.S. States with the Most Drug Overdose Deaths | 0 | - | 4.12 | 22,793 |
| Countries with the Highest Carbon Dioxide Emissions | 0 | - | 4.97 | 109,570 |
| Countries by Carbon Dioxide Emissions per Capita | 0 | - | 4.03 | 49,122 |
| Countries Reducing Carbon Dioxide Emissions the Most | 0 | - | 4.89 | 64,320 |
| Countries with the Most Mangroves | 0 | - | 4.53 | 34,499 |
| Top 10 Solar Power Countries | 0 | - | 4.78 | 59,827 |
| Top 10 U.S. States by Solar Power | 0 | - | 4.24 | 25,710 |
| Worst Plastic Polluting Countries | 0 | - | 4.51 | 66,177 |
| Countries that Desalinate the Most Water | 0 | - | 4.77 | 41,414 |
| Countries with the Most Forest | 0 | - | 4.87 | 146,746 |
| Top 10 Most-Forested U.S. States | 0 | - | 4.37 | 45,483 |
| Least-Forested Countries | 0 | - | 4.53 | 64,962 |
| Top 10 Most Forested Countries in Asia | 0 | - | 4.63 | 63,236 |
| Countries with the Most Forest A-Z | 0 | - | 4.63 | 55,248 |
| Most Forested European Countries | 0 | - | 4.80 | 75,002 |
| Least Forested European Countries | 0 | - | 4.25 | 53,833 |
| Least Forested Countries in Asia | 0 | - | 4.74 | 64,486 |
| Countries with the Highest Percentage of Forest | 0 | - | 4.62 | 37,710 |
| Top 10 Least-Forested U.S. States | 0 | - | 4.50 | 46,359 |
| Tropical Rainforest Countries | 0 | - | 4.68 | 81,799 |
| Countries with Tropical Rainforest and Glaciers | 0 | - | 4.51 | 55,475 |
| Countries with Glaciers | 0 | - | 4.97 | 104,751 |
| Northernmost Countries Without Glaciers | 0 | - | 4.61 | 36,086 |
| Countries with the Most Sunlight Per Square Meter | 0 | - | 4.35 | 17,067 |
