1. How are sodium ions identified, and what is the result?

Question 1 of 10

2. In a flame test, a blue-green colour is seen. Give the formula of the cation which is present.

Question 2 of 10

3. When testing for halide or sulfate ions, why is acid added added first?

Question 3 of 10

4. In the test for carbonate ions, what result shows they are present?

Question 4 of 10

5. When NaOH is added to a sample, the resultant gas turns damp red litmus paper blue. What cation was present in the sample?

Question 5 of 10

6. When testing a sample of lithium bromide, nitric acid and then silver nitrate is added. Describe the result, and name the substance formed.

Question 6 of 10

7. Describe how you would carry out a flame test

Question 7 of 10

8. When NaOH is added to a sample, a green precipitate forms. What cation was present in the sample?

Question 8 of 10

9. How are calcium ions identified, and what is the result?

Question 9 of 10

10. What is the test for copper (II) ions (Cu²⁺) and what is the result?

Question 10 of 10


 

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