300+ Science Trivia Questions and Answers: Test Your Knowledge!
Article written by
Misha Patel
Looking for the best science trivia questions and answers? You’ve found the ultimate collection! From biology to physics, these science trivia questions will challenge students, adults, and trivia enthusiasts alike.
Quick Science Trivia Questions and Answers
Easy Science Trivia Questions (1-25)
Q1
What is the chemical symbol for water?
Answer:H2O
Q2
What planet is known as the “Red Planet”?
Answer:Mars
Q3
How many bones are in an adult human body?
Answer:206
Q4
What gas do plants absorb from the atmosphere during photosynthesis?
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Answer:You cannot simultaneously know both the exact position and momentum of a particle
Q77
What is the deepest oceanic trench?
Answer:The Mariana Trench
Q78
Who discovered penicillin?
Answer:Alexander Fleming
Q79
What is a supernova?
Answer:A powerful stellar explosion that occurs at the end of a massive star’s life
Q80
What does CRISPR stand for?
Answer:Clustered Regularly Interspaced Short Palindromic Repeats
Q81
What is the half-life of Carbon-14?
Answer:Approximately 5,730 years
Q82
What is the name of the theoretical boundary around a black hole?
Answer:Event horizon
Q83
What is the most reactive element on the periodic table?
Answer:Fluorine
Q84
What is the scientific name for the human species?
Answer:Homo sapiens
Q85
What is the study of the immune system called?
Answer:Immunology
Q86
What is the rarest naturally occurring element?
Answer:Astatine
Q87
What is the name of the process by which stars create heavier elements?
Answer:Nuclear fusion
Q88
What is the smallest unit of genetic information?
Answer:Gene
Q89
What is the study of the structure of organisms called?
Answer:Anatomy
Q90
What is the name of the theory that explains the origin of the universe?
Answer:Big Bang Theory
Q91
What is the chemical formula for ammonia?
Answer:NH3
Q92
What is the study of the nervous system called?
Answer:Neurology
Q93
What is the name of the effect that causes moving clocks to run slower?
Answer:Time dilation
Q94
What is the most electronegative element?
Answer:Fluorine
Q95
What is the study of genes and heredity called?
Answer:Genetics
Q96
What is the name of the particle that carries the electromagnetic force?
Answer:Photon
Q97
What is the chemical formula for methane?
Answer:CH4
Q98
What is the study of the endocrine system called?
Answer:Endocrinology
Q99
What is the name of the boundary between two tectonic plates?
Answer:Fault line
Q100
What is the most stable isotope of uranium?
Answer:Uranium-238
Q101
What is the study of the digestive system called?
Answer:Gastroenterology
Q102
What is the name of the process by which water moves through plants?
Answer:Transpiration
Q103
What is the chemical formula for sulfuric acid?
Answer:H2SO4
Q104
What is the study of the respiratory system called?
Answer:Pulmonology
Q105
What is the name of the force that holds atomic nuclei together?
Answer:Strong nuclear force
Q106
What is the most abundant element in the universe?
Answer:Hydrogen
Q107
What is the study of the circulatory system called?
Answer:Cardiology
Q108
What is the name of the process by which cells divide to form gametes?
Answer:Meiosis
Q109
What is the chemical formula for hydrochloric acid?
Answer:HCl
Q110
What is the study of the urinary system called?
Answer:Urology
Q111
What is the name of the particle that mediates the weak nuclear force?
Answer:W and Z bosons
Q112
What is the densest naturally occurring element?
Answer:Osmium
Q113
What is the study of the muscular system called?
Answer:Myology
Q114
What is the name of the process by which plants respond to light?
Answer:Phototropism
Q115
What is the chemical formula for nitric acid?
Answer:HNO3
Q116
What is the study of the skeletal system called?
Answer:Osteology
Q117
What is the name of the theoretical particle that gives mass to other particles?
Answer:Higgs boson
Q118
What is the lightest noble gas?
Answer:Helium
Q119
What is the study of the skin called?
Answer:Dermatology
Q120
What is the name of the process by which plants respond to gravity?
Answer:Gravitropism
Q121
What is the chemical formula for phosphoric acid?
Answer:H3PO4
Q122
What is the study of the eyes called?
Answer:Ophthalmology
Q123
What is the name of the theoretical particle that makes up dark matter?
Answer:WIMP (Weakly Interacting Massive Particle)
Q124
What is the heaviest naturally occurring element?
Answer:Uranium
Q125
What is the study of the ears called?
Answer:Otology
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How many elements are currently on the periodic table?
Answer:118
Q177
What is the most reactive metal?
Answer:Francium
Q178
What element has the atomic number 1?
Answer:Hydrogen
Q179
What is the chemical symbol for tungsten?
Answer:W
Q180
What element is known as quicksilver?
Answer:Mercury
Q181
What is the chemical symbol for potassium?
Answer:K
Q182
What element has the highest melting point?
Answer:Tungsten
Q183
What is the chemical symbol for sodium?
Answer:Na
Q184
What element is essential for making steel?
Answer:Iron
Q185
What is the chemical symbol for silver?
Answer:Ag
Q186
What element is used in pencils?
Answer:Carbon (graphite)
Q187
What is the chemical symbol for lead?
Answer:Pb
Q188
What element is used in light bulbs?
Answer:Tungsten
Q189
What is the chemical symbol for tin?
Answer:Sn
Q190
What element is used in batteries?
Answer:Lithium (among others)
Q191
What is the chemical symbol for copper?
Answer:Cu
Q192
What element is used in fertilizers?
Answer:Nitrogen
Q193
What is the chemical symbol for zinc?
Answer:Zn
Q194
What element is used in computer chips?
Answer:Silicon
Q195
What is the chemical symbol for aluminum?
Answer:Al
Chemical Reactions and Compounds
Q196
What is the chemical formula for glucose?
Answer:C6H12O6
Q197
What type of reaction releases energy?
Answer:Exothermic
Q198
What is the chemical formula for hydrogen peroxide?
Answer:H2O2
Q199
What type of reaction absorbs energy?
Answer:Endothermic
Q200
What is the chemical formula for baking soda?
Answer:NaHCO3
Q201
What is the process of a solid becoming a gas called?
Answer:Sublimation
Q202
What is the chemical formula for vinegar?
Answer:CH3COOH
Q203
What is the process of a liquid becoming a gas called?
Answer:Evaporation
Q204
What is the chemical formula for aspirin?
Answer:C9H8O4
Q205
What is the process of a gas becoming a liquid called?
Answer:Condensation
Q206
What is the chemical formula for caffeine?
Answer:C8H10N4O2
Q207
What is the process of a liquid becoming a solid called?
Answer:Freezing
Q208
What is the chemical formula for quartz?
Answer:SiO2
Q209
What is the term for a reaction that goes both ways?
Answer:Reversible reaction
Q210
What is the chemical formula for limestone?
Answer:CaCO3
Q211
What is a substance that speeds up a reaction called?
Answer:Catalyst
Q212
What is the chemical formula for rust?
Answer:Fe2O3
Q213
What is the term for the amount of substance in a solution?
Answer:Concentration
Q214
What is the chemical formula for dry ice?
Answer:CO2
Q215
What is the term for a solution that cannot dissolve more solute?
Answer:Saturated
Q216
What is the chemical formula for chalk?
Answer:CaCO3
Q217
What is the term for the energy needed to start a reaction?
Answer:Activation energy
Q218
What is the chemical formula for milk of magnesia?
Answer:Mg(OH)2
Q219
What is the term for a mixture that looks uniform?
Answer:Homogeneous
Q220
What is the chemical formula for Epsom salt?
Answer:MgSO4·7H2O
Q221
What is the term for a mixture that looks non-uniform?
Answer:Heterogeneous
Q222
What is the chemical formula for bleach?
Answer:NaClO
Q223
What is the term for the number of protons in an atom?
Answer:Atomic number
Q224
What is the chemical formula for antacid tablets?
Answer:CaCO3 (calcium carbonate)
Q225
What is the term for atoms with the same number of protons but different neutrons?
Answer:Isotopes
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