
Identify energy
Free printable Chemistry science worksheet for "Identify energy" — practice chemical reactions. No-prep, print or assign online.
Aimed at high school Physical Science, this worksheet asks students to identify the role of energy in chemical reactions — distinguishing between endothermic and exothermic processes and understanding energy inputs and outputs. Teachers can deploy it after direct instruction as a formative check or as a structured review tool to consolidate learning before assessments. It fits within a Chemical Reactions unit and reinforces the connection between chemistry concepts and real-world energy changes.
Learning objectives
- Identify energy changes in endothermic and exothermic chemical reactions
- Distinguish between energy inputs and energy outputs in reaction diagrams
- Apply knowledge of reaction energy to explain real-world chemical processes
Answer Key

How to use this worksheet
- Click “Download Worksheet” and sign in with Google or email to get the PDF instantly.
- Print at home or in class for High School; it's no-prep, with no extra materials needed.
- Use the included answer key to mark it in seconds.
Frequently asked questions
Is the “Identify energy” worksheet free?
Yes. “Identify energy” is a free printable Science worksheet. Sign in with Google or email to download the PDF instantly.
What grade or age is this Science worksheet for?
It's designed for High School (ages 14–18), covering Chemical reactions.
Does it come with an answer key?
Yes — a matching answer key is included so you can grade it in seconds.
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