Identifying Chemical Reactions
A worksheet for 7th-grade science students to practice identifying different types of chemical reactions.
Includes
Standards
Topics
Identifying Chemical Reactions
Name:
Date:
Score:
Read each question carefully and provide your answer in the space provided. For multiple-choice questions, circle the correct option.
1. Which type of reaction involves two or more reactants combining to form a single product?
Decomposition
Synthesis
Single displacement
Double displacement
2. In a combustion reaction, one of the reactants is always:
Water
Carbon dioxide
Oxygen
Hydrogen
3. A chemical reaction that absorbs energy from its surroundings is called an reaction.
4. The breaking down of a compound into simpler substances is known as a reaction.
5. In a single displacement reaction, a more reactive element displaces a less reactive element from its compound.
True
False
6. The image below shows a decomposition reaction.
True
False
7. Describe the key difference between an exothermic and an endothermic reaction.