NumicornNumicornLearn, solve, progress

Chemical Reactions Practice Tests

These Grade 10 Science practice tests develop evidence of chemical change, reactants, products, reaction types, balanced equations, conservation of atoms, catalysts, energy changes, and reaction rates.

Skills covered

  • Identifying precipitates, gas formation, temperature changes, color changes, and other evidence of chemical reactions
  • Distinguishing reactants and products and applying conservation of matter to chemical equations
  • Classifying synthesis, decomposition, single replacement, double replacement, combustion, neutralization, and redox reactions
  • Balancing equations with coefficients while preserving chemical formulas and state symbols
  • Explaining exothermic and endothermic reactions, activation energy, catalysts, collision theory, concentration, temperature, and surface area

How to use these practice tests

Read the equation from left to right, count each type of atom, and classify the pattern. When analyzing rate or energy, connect the observation to particle collisions and activation energy.

For more Grade 10 Science practice, return to the Grade 10 Science category.

Select a test

5 Tests
1. Test2. Test3. Test4. Test5. Test

2. Test

Grade 10 Chemical Reactions Practice Tests

Practice Grade 10 Science questions about evidence of chemical change, reactants, products, reaction types, balancing equations, conservation of atoms, catalysts, energy, and reaction rates.

Choose the best answer. Identify reactants and products, classify the reaction, balance atoms with coefficients, and analyze energy or rate changes.

10 Questions
0/10 Questions0 %
Correct 0
Incorrect 0
Unanswered 10
1. QuestionMultiple choice

What is a synthesis reaction?

Please select an answer first.

Correct answer: A

The correct answer is Two or more substances combine to form one product..

  1. Identify the reaction concept: Determine whether the question asks about evidence, reactants, products, reaction type, balancing, energy, or reaction rate.
  2. Track the chemical change: Synthesis has the general pattern A + B → AB.
  3. Check atoms and energy: The correct answer is Two or more substances combine to form one product..

Synthesis has the general pattern A + B → AB.

2. QuestionMultiple choice

What is a decomposition reaction?

Please select an answer first.

Correct answer: B

The correct answer is One compound breaks into two or more simpler substances..

  1. Identify the reaction concept: Determine whether the question asks about evidence, reactants, products, reaction type, balancing, energy, or reaction rate.
  2. Track the chemical change: Decomposition has the general pattern AB → A + B.
  3. Check atoms and energy: The correct answer is One compound breaks into two or more simpler substances..

Decomposition has the general pattern AB → A + B.

3. QuestionMultiple choice

What is a single-replacement reaction?

Please select an answer first.

Correct answer: C

The correct answer is One element replaces another element in a compound..

  1. Identify the reaction concept: Determine whether the question asks about evidence, reactants, products, reaction type, balancing, energy, or reaction rate.
  2. Track the chemical change: Single replacement follows a pattern such as A + BC → AC + B.
  3. Check atoms and energy: The correct answer is One element replaces another element in a compound..

Single replacement follows a pattern such as A + BC → AC + B.

4. QuestionMultiple choice

What is a double-replacement reaction?

Please select an answer first.

Correct answer: D

The correct answer is Ions in two compounds exchange partners to form two new compounds..

  1. Identify the reaction concept: Determine whether the question asks about evidence, reactants, products, reaction type, balancing, energy, or reaction rate.
  2. Track the chemical change: Double replacement follows the pattern AB + CD → AD + CB.
  3. Check atoms and energy: The correct answer is Ions in two compounds exchange partners to form two new compounds..

Double replacement follows the pattern AB + CD → AD + CB.

5. QuestionMultiple choice

What is combustion?

Please select an answer first.

Correct answer: A

The correct answer is A reaction in which a substance reacts with oxygen and releases energy..

  1. Identify the reaction concept: Determine whether the question asks about evidence, reactants, products, reaction type, balancing, energy, or reaction rate.
  2. Track the chemical change: Combustion commonly involves oxygen and releases energy as heat and often light.
  3. Check atoms and energy: The correct answer is A reaction in which a substance reacts with oxygen and releases energy..

Combustion commonly involves oxygen and releases energy as heat and often light.

6. QuestionMultiple choice

What is a neutralization reaction?

Please select an answer first.

Correct answer: B

The correct answer is An acid reacts with a base to produce water and a salt..

  1. Identify the reaction concept: Determine whether the question asks about evidence, reactants, products, reaction type, balancing, energy, or reaction rate.
  2. Track the chemical change: Acid-base neutralization commonly produces water and an ionic salt.
  3. Check atoms and energy: The correct answer is An acid reacts with a base to produce water and a salt..

Acid-base neutralization commonly produces water and an ionic salt.

7. QuestionMultiple choice

What happens in an acid-base reaction?

Please select an answer first.

Correct answer: C

The correct answer is Hydrogen-ion and hydroxide-ion chemistry produces water while the remaining ions form a salt..

  1. Identify the reaction concept: Determine whether the question asks about evidence, reactants, products, reaction type, balancing, energy, or reaction rate.
  2. Track the chemical change: In a typical neutralization, H⁺ and OH⁻ combine to form H₂O and other ions form the salt.
  3. Check atoms and energy: The correct answer is Hydrogen-ion and hydroxide-ion chemistry produces water while the remaining ions form a salt..

In a typical neutralization, H⁺ and OH⁻ combine to form H₂O and other ions form the salt.

8. QuestionMultiple choice

What is oxidation-reduction chemistry commonly associated with?

Please select an answer first.

Correct answer: D

The correct answer is Transfer of electrons between substances.

  1. Identify the reaction concept: Determine whether the question asks about evidence, reactants, products, reaction type, balancing, energy, or reaction rate.
  2. Track the chemical change: Redox reactions involve oxidation and reduction, which track electron loss and gain.
  3. Check atoms and energy: The correct answer is Transfer of electrons between substances.

Redox reactions involve oxidation and reduction, which track electron loss and gain.

9. QuestionMultiple choice

Which pattern represents synthesis?

Please select an answer first.

Correct answer: A

The correct answer is A + B → AB.

  1. Identify the reaction concept: Determine whether the question asks about evidence, reactants, products, reaction type, balancing, energy, or reaction rate.
  2. Track the chemical change: Synthesis combines simpler reactants into one compound product.
  3. Check atoms and energy: The correct answer is A + B → AB.

Synthesis combines simpler reactants into one compound product.

10. QuestionMultiple choice

What does a catalyst do in a reaction?

Please select an answer first.

Correct answer: B

The correct answer is It lowers activation energy and speeds the reaction without being consumed overall..

  1. Identify the reaction concept: Determine whether the question asks about evidence, reactants, products, reaction type, balancing, energy, or reaction rate.
  2. Track the chemical change: A catalyst provides an alternative pathway with lower activation energy.
  3. Check atoms and energy: The correct answer is It lowers activation energy and speeds the reaction without being consumed overall..

A catalyst provides an alternative pathway with lower activation energy.

Previous testNext test