In a reaction, I can either build or break down, transforming substances into new forms. What am I?
Category: Science · Difficulty: expert
Hint: Think about substances that speed up reactions without being consumed.
Answer
A catalyst
Explanation
Catalysts facilitate chemical reactions by lowering activation energy while remaining unchanged at the end.
This is a expert science riddle — one of the harder riddles here. The answer is A catalyst.
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