SME
Grade 10 Science · Chemistry
Chemical equations: balancing, types of reactions and predicting products
Sort reactions by whether the reactants join, split, swap partners or burn: the five types of reaction.
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Do the reactants join, split, swap partners or burn?
Tap a card, then tap its group.
Assumptions
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A fuel burning in oxygen makes carbon dioxide and water.
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Each colored ball is an atom; balls side by side are bonded.
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The pattern of what joins, splits or swaps names the type.
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More problem types
Balancing the combustion of an alkane
Use this to balance any alkane burning, such as “C₃H₈ + O₂ → CO₂ + H₂O”: carbon first, hydrogen next, oxygen last.
Balancing the combustion of an alkene
Use this to balance an alkene burning, such as “C₅H₁₀ + O₂ → CO₂ + H₂O”: with an odd number of carbons the fuel’s coefficient is 2.
Balancing a synthesis: aluminum oxide
Use this for “Balance Al + O₂ → Al₂O₃.”
Balancing a single replacement: zinc in acid
Use this for “Balance Zn + HCl → ZnCl₂ + H₂.”
Predicting a single replacement
Use this for “Does zinc react with copper(II) sulfate, and what does it make?”