Chemistry ideas click fastest with real practice. This set gives your Grade 9-12 class ninety questions on combustion reactions, aligned to the same NGSS performance expectation.

The set includes questions like "What happens to the temperature of a system during combustion?", "Which of the following conditions favors incomplete combustion?", and "Which hydrocarbon has the highest energy content per mole during combustion?"

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, 26 pages in total

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.

Ways to Use This Resource

• Self checking practice, since every answer key includes explanations
• Homework or review before a test
• No prep cover lesson for a substitute teacher
• 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 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.