I can be both a solid and a gas, but not a liquid. What am I?
Category: Science · Difficulty: hard
Hint: Think about how certain substances can change states under pressure.
Answer
Solid carbon dioxide
Explanation
Carbon dioxide can exist as a solid (dry ice) directly sublimating to gas without becoming liquid.
This is a hard science riddle — a tricky one that takes a little thought. The answer is Solid carbon dioxide.
More Science riddles
- I can be a tiny part of something big, and I’m found in every living organism. What am I?
- What do we harness from the sun to power our homes?
- What do we call the phenomenon that splits light into different colors, like a rainbow?
- What is the term for the speed at which sound travels through air?
- Which material is known for its ability to keep heat from escaping?
- What can be classified into groups but isn't alive?
- What force acts against gravity when a ball bounces back up?
- What do we call the energy an object possesses due to its motion?