Question

Edge Modeling Nuclear Changes

Summarize nuclear changes.

a) Use your completed table and models to write a summary that addresses the following questions:

1. How does energy change in these reactions? Is energy needed to start the reactions or is energy given off in the reactions? For each type of reaction, approximately how much energy is released?

2. How do these energy changes compare in scale to other types of reactions, such as chemical reactions?

Answer 1

Nuclear reactions release a significant amount of energy, much more than most chemical reactions. The energy changes in nuclear reactions result in a measurable change of mass. The energy released in a nuclear reaction is approximately one million times more energy per atom than chemical changes.

Step-by-step explanation:

Nuclear reactions, like chemical reactions, are accompanied by changes in energy. The energy changes in nuclear reactions are enormous compared to those of most chemical reactions. In fact, these energy changes are so large that they result in a measurable change of mass. The energy released in a nuclear reaction is approximately 1 × 10¹8 kJ/mol, which is almost one million times more energy per atom than chemical changes.

Answer 2

Part 1

• During nuclear reactions, energy is released.
• To calculate energy changes, use the attached process.

Part 2

• In nuclear reactions, much more energy is released than in other types of reactions, such as chemical reactions.