| Elements of the Periodic Table | 0 | - | 5.00 | 2,223,569 |
| Elements by Symbol | 0 | - | 4.92 | 195,777 |
| Speed Symbol by Element | 0 | - | 4.91 | 103,777 |
| Chemical Elements with Short Names | 0 | - | 4.81 | 93,551 |
| Noble Gases | 0 | - | 4.89 | 77,549 |
| Elements that are Gases at Room Temperature | 0 | - | 4.86 | 64,126 |
| Periodic Table Symbols | 0 | - | 4.97 | 71,110 |
| Elements with One-Letter Symbols | 0 | - | 4.83 | 80,998 |
| Elements Whose First Letter Doesn't Match the Symbol | 0 | - | 4.86 | 16,979 |
| Elemental Words | 0 | - | 4.96 | 52,033 |
| Metals of Antiquity | 0 | - | 4.94 | 92,984 |
| First Twenty Elements - Sudden Death | 0 | - | 4.82 | 35,031 |
| Elements - Sudden Death | 0 | - | 4.91 | 126,712 |
| One Letter Periodic Table Symbols - Sudden Death | 0 | - | 4.88 | 53,990 |
| Lightest Chemical Elements A-Z | 0 | - | 4.57 | 31,922 |
| Periodic Table Quiz - First 20 Elements | 0 | - | 4.72 | 187,498 |
| Periodic Table Elements by Clue #1 | 0 | - | 4.80 | 62,236 |
| International Scientific Units | 0 | - | 4.95 | 155,582 |
| Electromagnetic Spectrum | 0 | - | 4.93 | 62,316 |
| Random Symbol to Element | 0 | - | 4.88 | 92,332 |
| Periodic Table Elements by Clue #2 | 0 | - | 4.52 | 12,022 |
| Click the Chemical Element | 0 | - | 4.96 | 79,407 |
| Most Common Elements in the Human Body | 0 | - | 4.74 | 150,910 |
| Name the Virus | 0 | - | 4.86 | 76,354 |
| Elements by Picture | 0 | - | 4.28 | 69,612 |
| Major Taxonomic Ranks | 0 | - | 4.63 | 79,925 |
| Famous Scientists | 0 | - | 4.57 | 42,491 |
| Answers are Elements #2 | 0 | - | 4.43 | 54,846 |
| Periodic Table Elements A-Z | 0 | - | 4.78 | 102,291 |
| Name a Valid Element | 0 | - | 4.64 | 69,637 |
| Scientific Names | 0 | - | 4.32 | 78,210 |
| Name the Metal Alloy | 0 | - | 4.70 | 13,370 |
| Things Named For People #3 - Science | 0 | - | 4.85 | 53,651 |
| Answers are Elements #1 | 0 | - | 4.30 | 52,712 |
| Most Guessed Elements on JetPunk | 0 | - | 4.56 | 48,106 |
| Element... or Pokémon? | 0 | - | 4.98 | 130,426 |
| Body Parts - Sudden Death #1 | 0 | - | 4.85 | 61,481 |
| Bones - Sudden Death | 0 | - | 4.95 | 49,293 |
| Famous Effects | 0 | - | 4.62 | 12,170 |
| Science Multiple Choice #1 | 0 | - | 4.53 | 86,108 |
| Periodic Table Elements Mentioned in the Bible | 0 | - | 4.77 | 70,356 |
| Category Elimination - Elements | 0 | - | 4.61 | 53,292 |
| Body Part Cliches | 0 | - | 4.43 | 123,118 |
| Bones of the Human Body | 0 | - | 4.52 | 40,229 |
| Medical Conditions Quiz | 0 | - | 4.78 | 123,291 |
| Simple Machines Quiz | 0 | - | 4.35 | 9,071 |
| Astronomy Quiz | 0 | - | 4.90 | 81,856 |
| Largest Objects in the Solar System | 0 | - | 4.99 | 135,933 |
| Solar System Trivia | 0 | - | 4.93 | 46,130 |
| Click the Planet | 0 | - | 4.96 | 90,375 |
| A Quiz About Diamonds | 0 | - | 4.60 | 11,428 |
| Science Multiple Choice #2 | 0 | - | 4.37 | 36,371 |
| Science Multiple Choice #3 | 0 | - | 4.38 | 34,419 |
| Environmental Issues | 0 | - | 4.54 | 26,741 |
| Name a Valid Answer - Science | 0 | - | 4.78 | 40,171 |
| Body Parts in History and Culture | 0 | - | 4.42 | 35,153 |
| Science General Knowledge #1 | 0 | - | 4.54 | 163,754 |
| Science General Knowledge #2 | 0 | - | 4.48 | 117,009 |
| Science General Knowledge #3 | 0 | - | 4.55 | 99,420 |
| Science Vocabulary #2 | 0 | - | 4.52 | 59,316 |
| Word Chain - Science | 0 | - | 4.59 | 54,444 |
| Diseases: Virus... or Bacteria? | 0 | - | 4.61 | 38,427 |
| Planets of the Solar System Quiz | 0 | - | 4.93 | 1,091,644 |
| Name the Constellations - With a Map | 0 | - | 4.92 | 35,694 |
| The Sun Quiz | 0 | - | 4.93 | 34,186 |
| First Names of Scientists | 0 | - | 4.50 | 56,525 |
| Groups of Two - Science | 0 | - | 4.26 | 48,161 |
| Science Vocabulary #1 | 0 | - | 4.34 | 71,451 |
| Science Vocabulary #3 | 0 | - | 4.31 | 51,701 |
| Science Decoder | 0 | - | 4.52 | 28,664 |
| Rocks and Minerals Picture Quiz | 0 | - | 4.48 | 29,175 |
| Animals - Taxonomy to Common Name | 0 | - | 4.80 | 28,122 |
| Science True or False | 0 | - | 4.35 | 40,022 |
| Medical Acronyms | 0 | - | 4.43 | 96,318 |
| Medical Vocabulary | 0 | - | 4.54 | 58,662 |
| Birthstones by Month | 0 | - | 4.41 | 80,508 |
| Citrus Fruits | 0 | - | 3.63 | 41,966 |
| "Ologies" Quiz | 0 | - | 4.34 | 96,429 |
| Albert Einstein Trivia | 0 | - | 4.58 | 18,324 |
| Brightest Natural Objects in the Sky | 0 | - | 4.45 | 27,842 |
| Planets By Picture Quiz | 0 | - | 4.49 | 56,281 |
| Planets - Multiple Choice | 0 | - | 4.41 | 53,213 |
| Body Part Words | 0 | - | 4.43 | 145,339 |
| Animal Anatomy Quiz | 0 | - | 4.39 | 59,696 |
| Word Scramble - Body Parts | 0 | - | 4.38 | 175,889 |
| Three Letter Body Parts | 0 | - | 4.40 | 205,092 |
| Human Body A-Z | 0 | - | 4.51 | 128,600 |
| One-Syllable Human Body Parts | 0 | - | 4.29 | 87,811 |
| Organs of the Human Body (with map) | 0 | - | 4.10 | 118,598 |
| Medical Specialties | 0 | - | 4.29 | 90,997 |
| The Diseases They Had | 0 | - | 4.15 | 13,909 |
| Diseases and Medical Conditions A-Z | 0 | - | 4.64 | 53,323 |
| 16 Questions that Prove that Physics Makes No Sense | 0 | - | 4.18 | 20,665 |
| The Pluto Quiz | 0 | - | 4.60 | 9,790 |
| Fish... or Not a Fish? | 0 | - | 4.39 | 43,239 |
| Astronomy Decoder | 0 | - | 4.50 | 37,874 |
| The Jupiter Quiz | 0 | - | 4.64 | 16,401 |
| The Mars Quiz | 0 | - | 4.55 | 18,586 |
| The Saturn Quiz | 0 | - | 4.54 | 11,513 |
| Dumb it Down Doc | 0 | - | 4.13 | 64,729 |
| Signs of the Zodiac Quiz | 0 | - | 4.45 | 223,890 |
| Name the Constellations | 0 | - | 4.58 | 44,716 |
| Astronomy True or False | 0 | - | 4.38 | 36,291 |
| Songs with Body Parts in the Title | 0 | - | 4.31 | 215,002 |
| Most Common Body Part Words | 0 | - | 3.88 | 31,553 |
| Body Parts - No Vowels | 0 | - | 4.15 | 25,120 |
| The Venus Quiz | 0 | - | 4.21 | 6,894 |
| U.S. States with Glaciers | 0 | - | 4.61 | 25,059 |
| Largest Countries Without Glaciers | 0 | - | 4.92 | 35,096 |
| Elements Named for Countries | 0 | - | 4.52 | 24,441 |
| Recommended Childhood Vaccines for Americans | 0 | - | 4.42 | 14,649 |
| Animals by Skeleton Image | 0 | - | 4.80 | 46,050 |
| The Voyage of Darwin - Animated Map Quiz | 0 | - | 4.99 | 14,377 |
| Countries with the Most HIV | 0 | - | 4.46 | 44,337 |
| Countries with the Most Malaria Deaths | 0 | - | 4.47 | 44,939 |
| U.S. States with the Most Drug Overdose Deaths | 0 | - | 4.12 | 22,778 |
| Countries with the Highest Carbon Dioxide Emissions | 0 | - | 4.97 | 109,559 |
| Countries by Carbon Dioxide Emissions per Capita | 0 | - | 4.03 | 49,117 |
| Countries Reducing Carbon Dioxide Emissions the Most | 0 | - | 4.89 | 64,287 |
| Countries with the Most Mangroves | 0 | - | 4.53 | 34,481 |
| Top 10 Solar Power Countries | 0 | - | 4.78 | 59,808 |
| Top 10 U.S. States by Solar Power | 0 | - | 4.24 | 25,700 |
| Worst Plastic Polluting Countries | 0 | - | 4.51 | 66,141 |
| Countries that Desalinate the Most Water | 0 | - | 4.77 | 41,399 |
| Countries with the Most Forest | 0 | - | 4.87 | 146,703 |
| Top 10 Most-Forested U.S. States | 0 | - | 4.37 | 45,468 |
| Least-Forested Countries | 0 | - | 4.53 | 64,938 |
| Top 10 Most Forested Countries in Asia | 0 | - | 4.63 | 63,222 |
| Countries with the Most Forest A-Z | 0 | - | 4.63 | 55,224 |
| Most Forested European Countries | 0 | - | 4.80 | 74,969 |
| Least Forested European Countries | 0 | - | 4.25 | 53,814 |
| Least Forested Countries in Asia | 0 | - | 4.74 | 64,474 |
| Countries with the Highest Percentage of Forest | 0 | - | 4.62 | 37,700 |
| Top 10 Least-Forested U.S. States | 0 | - | 4.50 | 46,349 |
| Tropical Rainforest Countries | 0 | - | 4.68 | 81,766 |
| Countries with Tropical Rainforest and Glaciers | 0 | - | 4.51 | 55,464 |
| Countries with Glaciers | 0 | - | 4.97 | 104,723 |
| Northernmost Countries Without Glaciers | 0 | - | 4.61 | 36,084 |
| Countries with the Most Sunlight Per Square Meter | 0 | - | 4.35 | 17,047 |
