Energy in Reactions Worksheet
Grade 11 Chemistry worksheet covering endothermic and exothermic reactions, enthalpy changes, activation energy, and reaction profiles.
Includes
Standards
Topics
Energy in Reactions
Name:
Date:
Score:
Read each question carefully and answer to the best of your ability. Show all your work for calculations.
1. Which of the following best describes an exothermic reaction?
A reaction that absorbs heat from its surroundings.
A reaction that releases heat to its surroundings.
A reaction that only occurs at high temperatures.
A reaction that forms a precipitate.
2. What is the sign of ΔH (enthalpy change) for an endothermic reaction?
Positive
Negative
Zero
Depends on the reaction
3. The minimum energy required to initiate a chemical reaction is called the .
4. In an exothermic reaction, the products have energy than the reactants.
5. Distinguish between an endothermic and an exothermic reaction, providing an example for each.
6. Draw a reaction profile diagram for an exothermic reaction. Label the reactants, products, activation energy, and enthalpy change (ΔH).
7. Catalysts increase the activation energy of a reaction.
True
False
Match the term with its definition.
8. Enthalpy
a. Energy released or absorbed during a chemical reaction.
9. Activation Energy
b. The total heat content of a system.
10. ΔH
c. Minimum energy required to start a reaction.
Related Worksheets
pH and pOH Calculations Worksheet
A Grade 11 Chemistry worksheet focusing on pH and pOH calculations, including strong acids, bases, and ion concentrations.
Ionic Bonds Worksheet
Explore the fundamentals of ionic bonding, including electron transfer, ion formation, and properties of ionic compounds, suitable for Grade 11 Chemistry students.
Molecular Geometry Worksheet
A Grade 11 Chemistry worksheet focusing on VSEPR theory and molecular shapes, including questions on bond angles and polarity.
Lewis Structure Practice Worksheet
A Grade 11 Chemistry worksheet focusing on drawing and understanding Lewis Structures, including octet rule, formal charge, and resonance.
Molecular Structure Worksheet
A Grade 11 Science worksheet covering key concepts in molecular structure, including VSEPR theory, hybridization, and intermolecular forces.
Calorimetry Principles
This worksheet explores the fundamental principles of calorimetry, including heat transfer, specific heat capacity, and calculations related to calorimetry experiments.
Grade 11 Chemistry: Word Equations
A worksheet for Grade 11 Chemistry students focusing on writing and balancing word equations for chemical reactions.
Types of Chemical Reactions Worksheet
Explore different types of chemical reactions including synthesis, decomposition, single displacement, double displacement, and combustion with this Grade 11 chemistry worksheet.