Draw the structure of the functional group that is found in ethanoic acid.
Which one of these pH values is acidic? Circle the right answer: pH4, pH7, pH9, pH13.
What kind of reaction is shown here? Circle the correct option: neutralisation, oxidation, polymerisation, reduction.
What is the meaning of the word exothermic?
Deduce the molecular formula of glycerol by showing the numbers of carbon, hydrogen and oxygen atoms present.
Balance the equation for the incomplete combustion of ethanol. $\text{C}_2\text{H}_5\text{OH} + 2\text{O}_2 \rightarrow \ldots\ldots\ldots\text{CO} + \ldots\ldots\ldots\text{H}_2\text{O}$
Describe a way to obtain pure samples of both sodium chloride and water from aqueous sodium chloride. Explain why this method is successful.
Which physical property could be measured to tell whether a water sample is pure?
Describe how to test for chloride ions. Include both the test and the result.