Chemical Reactions Science Unit for 2nd and 3rd Grade

Bring the excitement of science into your classroom with this hands-on unit all about chemical reactions! This no-prep resource helps students explore how matter changes through interactive lessons, simple experiments, and kid-friendly nonfiction content.

Teaching chemical reactions doesn’t have to feel intimidating or messy. This 10-day NGSS-aligned unit gives you everything you need to spark curiosity and help students build a clear understanding of physical vs. chemical changes.

Teachers often struggle to:

• Clearly explain the difference between physical and chemical changes in a student-friendly way
• Help students identify evidence of chemical reactions, such as bubbling, color change, temperature shifts, or the formation of a new substance
• Teach the concept of reversible vs. irreversible changes in a way that sticks
• Show how heating, cooling, and mixing can change matter through engaging, hands-on experiences
• Encourage students to use accurate scientific vocabulary in both writing and class discussions
• Guide students in making detailed observations and building explanations based on evidence

Our Chemical Reactions Unit solves common teaching challenges with thoughtfully designed resources that make science fun and meaningful. With PowerPoints, reading passages, stations, and an assessment, students will learn key vocabulary, investigate real-life reactions, and apply their learning in engaging ways.

What’s Included:

• 5 Interactive PowerPoint Lessons
• Student Booklet with 10 activities
•  Informational Reading Passages on chemical reactions
• STEM Investigation & Demonstrations (Balloon Reaction, Rust, etc.)
• 3 Science Stations for review
• 20 Task Card
• Final Assessment
• Complete Daily Lesson Plan
• Vocabulary Cards

Skills Covered:

• Explaining physical vs. chemical changes
• Identifying evidence of chemical changes (bubbles, color, temperature, new substance)
• Comparing reversible and irreversible changes
• Describing how heating, cooling, and mixing affect matter
• Using scientific vocabulary in speaking and writing
• Making observations and building evidence-based explanations

How to Use in the Classroom:

Follow our 10-day sequence or adapt it to fit your pacing:

• Day 1: Physical & Chemical Changes – PPT Lesson + booklet sort
• Day 2: Heating & Cooling – PPT Lesson + reversible/irreversible practice
• Day 3: Chemical Reaction Clues – PPT Lesson + booklet activity
• Day 4: Changes Demonstration – Stations or teacher demo + booklet recording
• Day 5: Balloon Demonstration – PPT Lesson + live reaction observation
• Day 6: Reading Passage – Rust: Metal’s Slow Transformation + booklet activity
• Day 7: Vocabulary Crossword – Review activity + booklet puzzle
• Day 8: Science Stations – comic strips, clue matching, and vocabulary games
• Day 9: Task Card Review – 20 questions in partner/small group practice
• Day 10: Assessment – Final quiz on physical and chemical changes

❤️❤️ Why You’ll Love This Resource ❤️❤️

• Print-and-go format saves hours of prep time
• Engaging mix of direct instruction and interactive activities
• Leveled for grades 2-3, so you can choose what works best
• Thoughtful guidance for teaching sensitive topics with confidence
• Builds critical thinking skills through meaningful discussion

Watch your students develop deeper understanding as they explore the importance of equality and justice through this engaging, comprehensive unit!