Bond energies table
The bond energies set pairs a balanced equation with exactly the bond values pupils need, ready for energy change calculations. Turn on show structures and every molecule is drawn with its bonds visible.
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Part of the Science table family. See Flame test colours, Tests for gases and Tests for negative ions pages to explore further.
Why this works in Chemistry
Bond energy questions go wrong at the counting stage more often than the arithmetic. Putting the structures beside the table makes the counting visible and checkable on the board, and a table with just the five values this reaction uses stops pupils hunting through a data sheet.
Switch the question to a missing bond and it reverses, pupils are given the overall energy change and rearrange to find the hidden value. Download it for a worksheet or send it to questions within Plenary Studio.
Bond energy tables for three reactions
Every image here is free to use in your teaching under our image licence.
Bond energies for making hydrogen chloride, a short calculation with two bonds broken and two made.Download image, Bond energies for making hydrogen chloride, a short calculation with two bonds broken and two made. 
Show structures draws every molecule with its bonds, so pupils can count what breaks and what forms.Download image, Show structures draws every molecule with its bonds, so pupils can count what breaks and what forms. 
Bond energies for making ammonia, a calculation with a triple bond to break.Download image, Bond energies for making ammonia, a calculation with a triple bond to break.
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