Year 10 - Science
Three types of chemical reaction
Calculations involving masses
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This pupil-friendly study guide includes a unit summary, clear notes, common mistakes, and quick questions with answers.
Unit Summary
This unit covers writing chemical formulae, balancing equations, and using the conservation of mass. It includes calculating moles, empirical formulae, relative formula masses, and theoretical yields. Emphasis is on stoichiometry, concentration, gas volumes, and using standard form.
Lesson Summary
You will learn to use chemical equations to identify and describe oxidation, decomposition and precipitation reactions.
Key Notes
- In a chemical reaction the + symbol can be read as 'and' and the arrow as 'changes into'.
- In an oxidation reaction a reactant combines with oxygen.
- In a decomposition reaction a reactant splits into two or more new substances.
- In a precipitation reaction an insoluble salt is formed.
Vocabulary To Learn
- chemical equation: A chemical equation describes a reaction, indicating the reactants and products.
- oxidation: Oxidation is a type of reaction in which oxygen bonds to elements of the reactants.
- decomposition: Decomposition is a type of reaction in which a reactant compound breaks down into two or more products.
- precipitation: A reaction in which an insoluble salt forms from two solutions is called a precipitation reaction.
Common Mistakes To Avoid
- Pupils *very* easily confuse different types of reactions.
3 Quick Questions (With Answers)
1. Explain the scientific idea in this lesson using two key points.
In a chemical reaction the + symbol can be read as 'and' and the arrow as 'changes into'. In an oxidation reaction a reactant combines with oxygen.
2. Define this scientific word and use it in context. 'chemical equation'
A chemical equation describes a reaction, indicating the reactants and products. Include the word in a full scientific explanation, not as a single label.
3. Correct this common scientific misunderstanding.
Mistake: Pupils *very* easily confuse different types of reactions. Correction: Spend time developing ways to help pupils remember the differences and regularly challenge them to explain why one reaction is the type it is.
More Lessons In This Unit
- Balancing equations Study Guide
- Conservation of mass Study Guide
- Converting between mass and volume using moles Study Guide
- Converting between mass and volume using moles (RAM 1 d.p.) Study Guide
- Deducing an empirical formula experimentally Study Guide
- Deducing an empirical formula experimentally: using moles Study Guide
- Determining an equation experimentally: magnesium oxide Study Guide
- Determining an equation experimentally: magnesium oxide (RAM 1 d.p.) Study Guide
- Determining an equation experimentally: sodium hydrogencarbonate Study Guide
- Determining an equation experimentally: sodium hydrogencarbonate (RAM 1 d.p.) Study Guide
- Determining an equation from given values Study Guide
- Determining an equation from given values (RAM 1 d.p.) Study Guide
- Empirical formula calculations Study Guide
- Empirical formula calculations: using moles Study Guide
- Gas volumes Study Guide
- Gas volumes (RAM 1 d.p.) Study Guide
- Limiting reactants Study Guide
- Limiting reactants (RAM 1 d.p.) Study Guide
- Mass in a chemical reaction Study Guide
- Mass in a chemical reaction (RAM 1 d.p.) Study Guide
- Mass in a chemical reaction: using moles Study Guide
- Mass in a chemical reaction: using moles (RAM 1 d.p.) Study Guide
- Moles and masses Study Guide
- Moles and masses (RAM 1 d.p.) Study Guide
- Representations of a mole Study Guide
- Representations of a mole (RAM 1 d.p.) Study Guide
- The mole Study Guide
- The mole (RAM 1 d.p.) Study Guide
- Uncertainties in measurements: chemistry Study Guide
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