The table shows some properties of six compounds - Edexcel - GCSE Chemistry - Question 1 - 2012 - Paper 1
Question 1
The table shows some properties of six compounds.
| compound | melting point / °C | boiling point / °C | solubility in water | electrical conductivity of s... show full transcript
Worked Solution & Example Answer:The table shows some properties of six compounds - Edexcel - GCSE Chemistry - Question 1 - 2012 - Paper 1
Step 1
Which of the following lists of compounds from the table contains only ionic compounds?
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Answer
The only list containing only ionic compounds is:
C copper sulfate and sodium chloride
Copper sulfate is made of copper ions and sulfate ions, while sodium chloride consists of sodium ions and chloride ions. Both compounds are ionic.
Step 2
Give the name of one of these compounds and the colour it produces in the flame test.
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Answer
One of the compounds that produce a colour in a flame test is:
compound: sodium chloride
colour: yellow
Sodium produces a bright yellow flame when burned in a flame test.
