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Grade 5scienceStudents use observations to determine whether mixing substances produced new substances.

Signs of a New Substance

Practice evidence of chemical reactions with 10 problems, an answer key, and a printable PDF for Grade 5.

10 problems · Standards: 5-PS1-4 · Difficulty: medium

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✅ Answer key included · ✅ Free for home & classroom use

Highlights

Grade: Grade 5
Subject: science
Topic: Students use observations to determine whether mixing substances produced new substances.
Pages: 3 · worksheet + answer key
Answer key: ✅ Included
Class time: about 15 min

1. Ice cubes were left on a plate and turned into water. Was a new substance created?
2. A student mixed baking soda and vinegar. Bubbles formed and gas escaped. Was a new substance created?
3. Sugar was stirred into warm water until it disappeared. Was a new substance created?
4. A metal nail was left outside for two weeks and became covered with orange-brown rust. Was a new substance created?
5. A student mixed two clear liquids together. The mixture became very warm even though no heat was added. Was a new substance created?
6. Chocolate chips were heated in a pan and melted into liquid chocolate. Was a new substance created?

Showing 6 of 10 problems. The free PDF includes every problem plus the full answer key.

The free PDF includes all 3 pages — every problem plus the full answer key.

10 problems across 3 pages (worksheet + answer key)
Answer key included — every answer, ready to check
Standards: 5-PS1-4
Skill: Students use observations to determine whether mixing substances produced new substances.
Suggested use: classwork, homework, or sub plans

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