Creative Problem Solving in Chemistry - Four solutions

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Devise experiments to label some bottles correctly, using two different approaches.

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Four solutions
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Using the problems
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Level

Use

Specification

Northern Ireland
- A/AS level
  - CCEA Chemistry
    - Unit AS 3: Basic Practical Chemistry
      - use chemical tests listed in ‘Qualitative tests’ to identify unknown substances;
- GCSE
  - CCEA Chemistry
    - Unit 1: Structures, Trends, Chemical Reactions, Quantitative Chemistry and Analysis
      - 1.9 Chemical analysis
        1.9.16 write ionic equations for the halide and sulfate ion tests and tests for metal ions using sodium hydroxide solution;
England
- A/AS level
- GCSE
Scotland
- National 5
  - SQA Chemistry
    - Chemistry in society
      - Chemical analysis
        Analytical methods
        Flame tests can identify metals present in a sample.
    - Chemical changes and structure
      - Acids and bases
        pH
        The pH scale is an indication of the hydrogen ion concentration and runs from below 0 to above 14.
Wales
- GCSE
  - WJEC Combined science
    - Unit 2: Chemistry 1
      - 2.2 ATOMIC STRUCTURE AND THE PERIODIC TABLE
        (s) the identification of Li⁺, Na⁺, K⁺, Ca²⁺ and Ba²⁺ ions by flame tests and Cl⁻, Br⁻ and I⁻ ions by their reactions with silver nitrate solution (including ionic equations)
    - Unit 5: Chemistry 2
      - 5.2 ACIDS, BASES AND SALTS
        (a) substances as acidic, alkaline or neutral in terms of the pH scale, including acid/alkali strength
  - WJEC Chemistry
    - Unit 1: CHEMICAL SUBSTANCES, REACTIONS and ESSENTIAL RESOURCES
      - 1.2 ATOMIC STRUCTURE AND THE PERIODIC TABLE
        (t) the identification of Li⁺, Na⁺, K⁺, Ca²⁺ and Ba²⁺ ions by flame tests and Cl⁻, Br⁻ and I⁻ ions by their reactions with silver nitrate solution (including ionic equations)
    - Unit 2: CHEMICAL BONDING, APPLICATION OF CHEMICAL REACTIONS and ORGANIC CHEMISTRY
      - 2.2 ACIDS, BASES AND SALTS
        (a) substances as acidic, alkaline or neutral in terms of the pH scale, including acid/alkali strength
- A/AS level
  - WJEC Chemistry
    - Unit 1: THE LANGUAGE OF CHEMISTRY, STRUCTURE OF MATTER AND SIMPLE REACTIONS
      - 1.6 The Periodic Table
        (g) characteristic flame colours shown by compounds of Li, Na, K, Ca, Sr and Ba (Mg compounds show no colour)
        (o) reaction between aqueous Ag⁺ and halide ions followed by dilute aqueous NH₃

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