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8th Grade Reaction Dynamics Quizzes, Questions & Answers

Recent Reaction Dynamics Quizzes

Unit 2 Chemical Reaction Post Test

Questions: 9 | Attempts: 170 | Last updated: Mar 21, 2025

Sample Question
Atom comes from the Greek word, atomos. What does it mean?

Really small

Unable to be cut

Matter

Simple Word Equations Quiz

Questions: 8 | Attempts: 12785 | Last updated: Mar 21, 2025

Sample Question
When a CHEMICAL reaction occurs, what is made?

No new substance is made

A new substance is made, and new atoms are formed

A new substance is made, but atoms are not created or destroyed, they are just rearranged

Chemical Reaction Trivia Questions

Questions: 10 | Attempts: 276 | Last updated: Oct 16, 2025

Sample Question
What is the chemical equation for Hydrocarbon (methane) ?

CHO

CH4

CH2

KCH4

CH

Physical Science --- Chapter 6

Questions: 10 | Attempts: 230 | Last updated: Mar 21, 2025

Sample Question
A synthesis reaction is a reaction between at least two compounds in which

A compound is decomposed by an electric current.

One breaks down into at least two products.

A compound burns in the presence of oxygen.

A new, more complex compound is formed.

Fire Science and Fire Behavior

Questions: 10 | Attempts: 1382 | Last updated: Mar 22, 2025

Sample Question
What describes a process or reaction that releases energy usually in the form of heat, but also in the form of light (e.g. a spark, flame, or explosion), electricity (e.g. a battery), or sound?

Endothermic

Flash point

Exothermic

Ectothermic

Fire triangle

Chapter 7- Chemical Reactions

Questions: 21 | Attempts: 905 | Last updated: Oct 22, 2025

Sample Question
The process in which one or more substances change to make one or more new substances is called?

Chemical change

Chemical reaction

Chemical process

Chemical explosion

Ch5 Chemical Reactions

Questions: 26 | Attempts: 481 | Last updated: Mar 19, 2025

Sample Question
Which of the following does not indicate a chemical change has occurred?

Color change

Formation of a precipitate

Change in surface are

Gas production

Balancing Chemical Equations Quiz

Questions: 10 | Attempts: 22029 | Last updated: Dec 8, 2025

Sample Question
Balance the following chemical equation by choosing the correct set of coefficients: ___ CH4 + ___O2 --> ___CO2 + ___H2O

1 2 1 2

2 1 2 1

3 1 2 4

1 2 3 4

4 3 1 2

The Impossible Math Quiz =)

Questions: 10 | Attempts: 2629 | Last updated: Mar 22, 2025

Sample Question
Jim added a base to an acid. What did he get as a result?

Water

Salt

An explosion

Salt + Water

Carbon Dioxide + Salt + Water

Chemical Reactions Quiz: MCQ Exam!

Questions: 12 | Attempts: 13672 | Last updated: Mar 22, 2025

Sample Question
Which one of the following represents a physical change?

Iron rusting

Paper burning

Water freezing

Dynamite exploding

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