Ch 4: Reactions: Help and Review

About This Chapter

The Reactions chapter of this Middle School Physical Science Help and Review course is the simplest way to master chemical reactions. This chapter uses simple and fun videos that are about five minutes long, plus lesson quizzes and a chapter exam to ensure students learn the essentials of reactions.

Who's it for?

Anyone who needs help learning or mastering middle school physical science material will benefit from taking this course. There is no faster or easier way to learn middle school physical science. Among those who would benefit are:

  • Students who have fallen behind in understanding reaction processes and components
  • Students who struggle with learning disabilities or learning differences, including autism and ADHD
  • Students who prefer multiple ways of learning science (visual or auditory)
  • Students who have missed class time and need to catch up
  • Students who need an efficient way to learn about reactions
  • Students who struggle to understand their teachers
  • Students who attend schools without extra science learning resources

How it works:

  • Find videos in our course that cover what you need to learn or review.
  • Press play and watch the video lesson.
  • Refer to the video transcripts to reinforce your learning.
  • Test your understanding of each lesson with short quizzes.
  • Verify you're ready by completing the Reactions chapter exam.

Why it works:

  • Study Efficiently: Skip what you know, review what you don't.
  • Retain What You Learn: Engaging animations and real-life examples make topics easy to grasp.
  • Be Ready on Test Day: Use the Reactions chapter exam to be prepared.
  • Get Extra Support: Ask our subject-matter experts any question about reactions. They're here to help!
  • Study With Flexibility: Watch videos on any web-ready device.

Students will review:

This chapter helps students review the concepts in a reactions unit of a standard middle school physical science course. Topics covered include:

  • Methods for balancing chemical equations
  • Reactant atoms and molecules
  • Evaporation, condensation and freezing
  • Melting, sublimation and deposition
  • Methods for determining pH of acids, bases and neutral solutions

6 Lessons in Chapter 4: Reactions: Help and Review
Test your knowledge with a 30-question chapter practice test
Chemical Reactions and Balancing Chemical Equations

1. Chemical Reactions and Balancing Chemical Equations

In this lesson, you'll learn how to balance a chemical reaction equation using the conservation of matter law. You'll also learn how to write both word and formula equations, what the subscripts after a letter mean and what the numbers in front of compounds mean.

How Chemical Reactions Form New Products

2. How Chemical Reactions Form New Products

After watching this video, you will be able to explain what a chemical reaction is and how the products can have completely different properties to the reactants. A short quiz will follow.

Phase Change: Evaporation, Condensation, Freezing, Melting, Sublimation & Deposition

3. Phase Change: Evaporation, Condensation, Freezing, Melting, Sublimation & Deposition

Substances on Earth can exist in one of four phases, but mostly, they exist in one of three: solid, liquid or gas. Learn the six changes of phase: freezing, melting, condensation, vaporization, sublimation and deposition.

Acidic, Basic & Neutral Solutions: Determining pH

4. Acidic, Basic & Neutral Solutions: Determining pH

After watching this video, you will be able to explain the difference between acidic, basic, and neutral solutions and explain the concept of pH. A short quiz will follow.

Neutral Solution: Definition & Examples

5. Neutral Solution: Definition & Examples

Did you know that tap water and even human blood are neutral solutions? Continue reading to learn what neutral solutions are and how to identify them.

Physical Reaction: Definition & Examples

6. Physical Reaction: Definition & Examples

Did you know the cycle of freezing water to make ice and melting ice to produce water is considered a physical reaction? In this lesson, we'll learn more about physical reactions, define what a physical reaction is, and look at some examples.

Chapter Practice Exam
Test your knowledge of this chapter with a 30 question practice chapter exam.
Not Taken
Practice Final Exam
Test your knowledge of the entire course with a 50 question practice final exam.
Not Taken

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