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Exam (elaborations)

OCR A A Level CHEMISTRY PAPER 1 Q&A
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4

June 2025

2024/2025

A
OCR A A Level CHEMISTRY PAPER 1 Q&A 1.Test for carbonates - answers-- add dilute HCL - it makes carbon dioxide test for carbon dioxide by bubbling it through lime water 2.Test for ammonium ions - answers--add sodium hydroxide -warm the mixture -hover damp red litmus paper over it , if it turns blue the ions are present 3.Test for sulphate ionz (SO4 2-) - answers-- add dilute HCL - then add BaCl2 - BaSO4 is made which is insoluble in water so a white precipitate will be formed ...
harrisonwairumbi
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Exam (elaborations)

OCR A - A Level Chemistry - Quiz Bite on CFCs and Ozone -questions and answers
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3

March 2024

2023/2024

A+
OCR A - A Level Chemistry - Quiz Bite on CFCs and Ozone -questions and answers
EXAMSTUDYPLUG
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Package deal

OCR A-Level Chemistry Bundled Exams with complete solution | everything you need
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10

July 2023
OCR A-Level Chemistry Bundled Exams with complete solution | everything you need
Brainarium
$22.99 More Info

Exam (elaborations)

OCR A A Level CHEMISTRY | Questions and Answers with complete solution
Available in bundle

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4

July 2023

2022/2023

A+
Available in bundle
Test for carbonates - - add dilute HCL - it makes carbon dioxide test for carbon dioxide by bubbling it through lime water Test for ammonium ions - -add sodium hydroxide -warm the mixture -hover damp red litmus paper over it , if it turns blue the ions are present Test for sulphate ionz (SO4 2-) - - add dilute HCL - then add BaCl2 - BaSO4 is made which is insoluble in water so a white precipitate will be formed Test for Halides (Cl-, Br-, I-) - - add nitric acid - add silver nitrate -...
Brainarium
$4.99 More Info