Give your chemistry students a focused look at evidence of chemical change 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 "A solution is heated, and a color change occurs. What can be concluded?", "In a reaction where a gas is produced, if a smell is detected, what can be inferred?", and "When a metal reacts with oxygen, what evidence indicates a chemical change?"
All three worksheets cover the same topic in different question styles. That means you can use one as a pretest, another for practice or homework, and the third as a follow up quiz, without students ever seeing the same question twice.
This set is part of a complete NGSS aligned chemistry unit. The unit also covers Chemical Reactions, Types of Chemical Reactions, Balancing Equations, Identifying Chemical Reactions, Predicting Products, and Chemical and Physical Change, 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-PS1-2.
