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Equation Writing Videos
Formula & Equation Writing
This is an updated & extended version of some resources I developed in 2011 to give some Equation Writing practice a more interesting context. I used it originally with an S3 class (14/15 years) but I'm attempting to provide 3 different levels / stages so should be flexible enough to tailor to a variety of ages.
The original resources were posted on the TES Resources Website and have generated some very positive comments.
Formula Writing levels
This is a tentative attempt to rationalise levels of Formula Writing taking into account the divisions previously used for Standard Grade and the (as yet) vague descriptions contained in the new National documents.
Starting Off
Should only involve simple two-element compounds but including the use of prefixes (what I call "Rule Breakers" in my notes). No mention of Roman Numerals but I'm going to include some in this category - otherwise the choice of reactions is too limited.
Pupils at this level would not be expected to balance equations but these would be appropriate as 'easier' examples for Balancing Equations once pupils progress to that level.
Going Further
More than two elements - introducing Groups, but avoiding reactions which require brackets is the rationale here. Balancing equations should generally be straightforward.
However, there is still scope for more complicated examples of Balanced Equations to crop up.
For the Enthusiast
Brackets around Groups will feature more in these reactions as well as more difficult Balancing of equations. Less commom chemicals - less familiar formulae perhaps.
Also suitable as Revision exercises for older pupils needing to refresh their skills.
- Video Gallery
- 'Starting' Set 1
- 'Further' Set 1
- 'Enthusiast' Set 1
- 'Starting' Set 2
- 'Further' Set 2
- 'Enthusiast' Set 2
- 'Starting' Set 3
Video Gallery
There are also some print resources that were written to be used along with these videos:
Formula Writing Notes
Formula Notes 'Completed'
Formula Writing Summary
'Starting Off' Videos Set 1
Should only involve simple two-element compounds but including the use of prefixes (what I call "Rule Breakers" in my notes). No mention of Roman Numerals but I'm going to include some in this category - otherwise the choice of reactions is too limited. Pupils at this level would not be expected to balance equations but these would be appropriate as 'easier' examples for Balancing Equations once pupils progress to that level.
Aluminium With Bromine
Magnesium With Dry Ice
Sulphur With Oxygen
'Going Further' Videos Set 1
More than two elements - introducing Groups, but avoiding reactions which require brackets is the rationale here. Balancing equations should generally be straightforward. However, there is still scope for more complicated examples of Balanced Equations to crop up.
Gummy Bear With Potassium Chlorate
Charcoal With Potassium Nitrate
Decomposition of Copper (II) Carbonate
'For The Enthusiast' Videos Set 1
Brackets around Groups will feature more in these reactions as well as more difficult Balancing of equations. Less commom chemicals - less familiar formulae perhaps. Also suitable as Revision exercises for older pupils needing to refresh their skills.
Copper With Nitric Acid
Precipitation of Lead(II) Iodide
Alkali Earth (Calcium) With Water
'Starting Off' Videos Set 2
Should only involve simple two-element compounds but including the use of prefixes (what I call "Rule Breakers" in my notes). No mention of Roman Numerals but I'm going to include some in this category - otherwise the choice of reactions is too limited. Pupils at this level would not be expected to balance equations but these would be appropriate as 'easier' examples for Balancing Equations once pupils progress to that level.
Zinc With Hydrochloric Acid
Iron With Sulphur
AAluminium With Chlorine
'Going Further' Videos Set 2
More than two elements - introducing Groups, but avoiding reactions which require brackets is the rationale here. Balancing equations should generally be straightforward. However, there is still scope for more complicated examples of Balanced Equations to crop up.
Decomposition of Iron(II) Sulphate
Dichromate Volcano
'For The Enthusiast' Videos Set 2
Brackets around Groups will feature more in these reactions as well as more difficult Balancing of equations. Less commom chemicals - less familiar formulae perhaps. Also suitable as Revision exercises for older pupils needing to refresh their skills.
Displacement Of Silver By Copper
'Starting Off' Videos Set 3
Should only involve simple two-element compounds but including the use of prefixes (what I call "Rule Breakers" in my notes). No mention of Roman Numerals but I'm going to include some in this category - otherwise the choice of reactions is too limited. Pupils at this level would not be expected to balance equations but these would be appropriate as 'easier' examples for Balancing Equations once pupils progress to that level.
