Back to the full dot-point answer
SingaporeChemistryQuick questions
Experimental Chemistry and Separation
Quick questions on Tests for purity and identifying substances: N(A)-Level Chemistry
5short Q&A pairs drawn directly from our worked dot-point answer. For full context and worked exam questions, read the parent dot-point page.
What is reading a chromatogram?Show answer
A chromatogram is the paper after chromatography has finished. You read it like this:
What are tests for gases?Show answer
You must know the test and the result for each common gas. The result is what you would see or hear.
What is q1?Show answer
State the result you would see if you tested a sample of pure water with anhydrous copper(II) sulfate. [1 mark]
What is q2?Show answer
A solid melts over the range to . The pure solid should melt at . What does this tell you?
What is q3?Show answer
Describe how you would test an unknown gas to show that it is ammonia. [2 marks]
Have a question we have not covered?
This dot-point answer is short enough that we have not extracted many short questions yet. Read the full dot-point answer or ask Mo, our study assistant, in the chat for follow ups.