Give your chemistry students a focused look at conservation of mass lab with ninety questions built for real classroom use, whether you are starting a new unit or reviewing before a test.

The set includes questions like "When balancing a chemical equation, what is the primary goal?", "In a combustion reaction, what happens to the mass of the products compared to the reactants?", and "In a virtual lab, what is the significance of using digital scales for measuring mass?"

What's Inside?

• 30 Multiple Choice questions as a separate print ready PDF worksheet
• 30 True or False questions as a separate print ready PDF worksheet
• 30 Short Answer questions as a separate print ready PDF worksheet
• Includes Answer Key with Explanations for all 90 questions
• 6 print ready PDF files, 27 pages in total

Each worksheet reviews the same core ideas from a different angle. Use them across a week or unit so students see the material three times without it ever feeling repetitive.

Ways to Use This Resource

• No prep cover lesson for a substitute teacher
• Self checking practice, since every answer key includes explanations
• Homework or review before a test
• First look diagnostic to plan your unit
• Bell ringers and warm ups during the unit

This set is part of a complete NGSS aligned chemistry unit. The unit also covers Law of Conservation of Mass, Balancing Equations Challenge, Stoichiometry Introduction, Mole Concept Quiz, Mass Mass Calculations, and Mole Mole Problems, all in the same three worksheet format, so your classroom routine stays familiar while the topic changes.

Suitable for Grade 9-12 chemistry classes, and for NGSS aligned review at any point in the school year. This set is aligned to NGSS standard HS-PS1-7.