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!

Process in which solid directly changes to gas. riddle

31. 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.

Chemical formula for methane 

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

Chemical symbol for gold 

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

Smallest bone in human body riddle 

37. Riddles
What is the smallest bone in the human body? 
    • The smallest bone in the human body is the stapes bone in the middle ear. 

largest ocean on Earth riddle 

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

Chemical formula of water 

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