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!

Smallest particle of an element

2. Riddles
What is the name of the smallest particle of an element? 
    • The name of the smallest particle of an element is an atom.

Inside and outside your body riddle 

9. Riddles
I can be good for you, I can be bad, I can be found all over inside and outside your body. I am microscopic, single-celled and have no nucleus. 
    • Bacteria 

Cannot be bought at a gas station 

13. Riddles
I am a gas that is helpful to plants, but I cannot be bought at a gas station. What am I? 
    • Carbon dioxide 

Chemical formula for ammonia

14. Riddles
What is the chemical formula for ammonia? 
    • The chemical formula for ammonia is NH3.