
Identify reaction evidence
Free printable Grade 5 science worksheet for "Identify reaction evidence" — practice changes in matter. No-prep, print or assign online.
This Grade 5 Physical Science worksheet guides students to identify observable evidence of chemical reactions — such as color change, gas production, temperature change, and precipitate formation — and to distinguish chemical from physical changes. Teachers can use it before or after a demonstration or lab to anchor students' thinking in observable indicators. It supports Grade 5 standards that require students to identify evidence that a chemical reaction has occurred and to distinguish it from a physical change.
Learning objectives
- Identify observable indicators that signal a chemical reaction has occurred
- Distinguish chemical reactions from physical changes using evidence-based reasoning
- Explain why each identified indicator suggests that a new substance has been formed
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 Grade 5; 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 reaction evidence” worksheet free?
Yes. “Identify reaction evidence” 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 Grade 5 (ages 10–11), covering Changes in matter.
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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