Physical vs. chemical changes is the focus of this Grade 8 Science worksheet on matter and chemical change. Students examine observable evidence to distinguish a physical change from a chemical change and identify clues that indicate a new substance has formed.

Rather than relying only on definitions, the resource asks students to reason from evidence such as new substances, energy transfer, colour shifts, and gas evolution. Examples connected to everyday Alberta environments help students apply the distinction between physical and chemical changes in meaningful contexts.

What Students Practice

• Distinguishing physical changes from chemical changes using observable evidence
• Identifying indicators that a chemical change has occurred
• Recognizing evidence such as gas evolution, colour changes, energy transfer, and formation of new substances
• Explaining examples of physical and chemical change in everyday Alberta environments
• Using scientific reasoning to justify classifications of matter changes

Question Types

The worksheet combines multiple-choice questions, true-or-false statements, short-answer responses, a reading passage, matching, a cloze passage, an essay, and a “Did You Know?” element. This variety gives students opportunities to identify evidence, apply concepts to examples, and communicate their reasoning in both selected-response and written formats.

Included for Easier Teaching

• ✅ Student worksheet covering physical and chemical change evidence
• ✅ Separate PDF answer key for checking student responses
• ✅ Student Notes & Lesson Summary supplement for reinforcing key ideas
• ✅ Separate Teacher Guide with learning objectives, teaching tips, discussion questions, and common mistakes

Classroom Use

Use this Grade 8 matter and chemical change practice during a lesson, as guided or independent work, for review, or as a written check of student understanding. The notes supplement can support instruction before students complete the worksheet, while the Teacher Guide provides discussion prompts and identifies common mistakes that may arise when students classify changes.

With its focus on evidence of chemical change rather than memorized labels alone, this resource gives students repeated opportunities to connect observable observations with scientific explanations. The resource is identified with the Alberta framework and is designed around the matter and chemical change topic.