English National Curriculum - Science Science

6. Explore calculating Bond energies

Mission Objectives

Calculate bond energy values and use them to predict whether a reaction will be exothermic or endothermic

Relate bond energies to the correct part of energy level diagrams

Explain why bond energy calculations have a margin of error

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Keywords

Words and meanings to learn

margin

An amount of error allowed for circumstance change or miscalculation.

relate

The connection between two or more things.

thermal energy

Kinetic energy which corresponds to the energy transfer in things such as heat or internal systems.

chemical energy

The potential for a chemical reaction to occur in a chemical substance.

enthalpy

Amount of internal energy as well as the produce of volume and pressure in a thermodynamic system.

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Required Resources

Resources:

  • Whiteboard and markers
  • Projector and screen
  • Handouts with sample bond energy calculations and energy level diagrams
  • Scientific calculators
  • Internet access for research

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