Here are 100+ science riddles for you to enjoy! Looking for a science related riddles challenge? Check out our collection of chemistry riddles, physics riddles, biology riddles! They'll make you think and teach you scientific riddles things. Test yourself with this 100+ science riddles with answer. Whether you love science or just want some brain-teasing fun, these riddles are perfect. Put your thinking cap on and get ready to solve the mysteries of the universe, one science riddle at a time!

Updated: 02-01-2026

Chemical symbol for gold 

31. Riddles
What is the chemical symbol for gold? 
    • The chemical symbol for gold is Au. 

Chemical formula for methane 

32. Riddles
What is the chemical formula for methane? 
    • The chemical formula for methane is CH4. 

largest ocean on Earth riddle 

34. Riddles
What is the name of the largest ocean on Earth? 
    • The largest ocean on Earth is the Pacific Ocean. 

Chemical symbol for calcium

36. Riddles
What is the chemical symbol for calcium? 
    • The chemical symbol for calcium is Ca.

Chemical formula of water 

38. Riddles
What is the chemical formula for water? 
    • The chemical formula for water is H2O. 

Process in which solid directly changes to gas. riddle

42. Riddles
What is the name of the process by which a solid changes directly into a gas without becoming a liquid? 
    • The name of the process by which a solid changes directly into a gas without becoming a liquid is sublimation.