This Grade 6 science quiz is built to support NGSS MS-PS1-2, helping students grasp chemical reactions and properties through real-world examples and clear explanations. Designed for flexible classroom use, this resource includes both a printable PDF version and a self-grading Google Forms quiz—making it ideal for in-person, remote, or hybrid settings. The quiz begins with a student-friendly passage that explains how substances are made up of atoms and molecules and how chemical reactions lead