Understanding Physical and Chemical Changes

Brittney·

Science

Preview

At a Glance

Grade Level10th Grade

SubjectScience

Original Prompt

To model and describe physical changes in substances in terms of particle distance, movement, and arrangement To explain that when physical changes occur, intermolecular forces are broken, not covalent bonds To explain the difference between a physical and a chemical change Objective: SWBAT create particulate diagrams to represent the difference between physical and chemical changes in terms of particulate distance, movement, and arrangement.

This resource focuses on differentiating between physical and chemical changes by examining them at the particulate level. It begins with defining both types of changes, highlighting key concepts such as intermolecular forces, covalent bonds, and the states of matter. Through examples and diagrams, learners are encouraged to visualize how particles behave during physical changes—like the melting of ice—where the arrangement of particles changes without altering their chemical identity. It also covers chemical changes, exemplified by the combustion of methane, where new substances with different properties are formed. The resource includes guided and independent practice activities that allow students to illustrate these changes, fostering a deeper understanding of molecular interactions and transformations.