Example Sentences
"Catalysts work by lowering the activation energy of a reaction."
"A match must be struck to provide the activation energy to start burning."
Synonyms & Related Terms
Quick Check
Which best describes the meaning of activation energy?
Study Tips
To remember activation energy, try writing it in a sentence of your own. Connect it to something you already know about science.
Use it in conversation today — saying a word aloud three times helps lock it into long-term memory.