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Describe how to complete a flame test.

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place clean wire into solid being tested OR place damp splint into solid

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hold wire in bunsen flame and observe colour of flame produced

allow splint for wire

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What colour flame is produced when a sample containing copper ions undergoes a flame test?

green

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yellow

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red

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white

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What colour flame is produced when a sample containing sodium ions undergoes a flame test?

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if the paper is bleached white, chlorine is present

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This question is about the reaction between copper carbonate and sulfuric acid.

Write a balanced chemical equation for the reaction between copper carbonate and sulfuric acid.

CuCO₃ + H₂SO₄ → CuSO₄ + CO₂ + H₂O

chemical formulae of reactants correct

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chemical formulae of products correct

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Describe a test the student could do to identify the gas produced.

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bubble gas produced through limewater

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limewater will turn cloudy when carbon dioxide bubbles through

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Describe how the student would know when the chemical reaction has stopped.

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bubbling stops OR no more gas produced

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no fizzing

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no further changes in colour

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no more copper carbonate dissolves and sinks to the bottom of flask OR no more copper carbonate left as it has been used up in the reaction

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Chemical Analysis - exam practice

Chemical Analysis

Question 1 of 3

Chemical Analysis - exam practice

Chemical Analysis

Question 1 of 3