Whole Topic Checklist

• Define a pure substance and identify pure substances and mixtures from data about melting and boiling points
•  Describe a formulation and identify formulations given appropriate information
•  Describe chromatography, including the terms stationary phase and mobile phase and identify pure substances using paper chromatography
•  Explain what the Rf value of a compound represents, how the Rf value differs in different solvents and interpret and determine Rf values from chromatograms
•  Required practical 12: investigate how paper chromatography can be used to separate and tell the difference between coloured substances (inc calculation of Rf values)
•  Explain how to test for the presence of hydrogen, oxygen, carbon dioxide and chlorine
•  Chem ONLY: Identify some metal ions from the results of flame tests and describe how to conduct a flame test
•  Chem ONLY: Describe how sodium hydroxide solution can be used to identify some metal ions and identify metal ions from the results of their reactions with sodium hydroxide solution
•  Chem ONLY: Write balanced equations for the reactions between sodium hydroxide solution and some metal ions to produce insoluble hydroxides
•  Chem ONLY: Describe how to identify carbonates using limewater
•  Chem ONLY: Describe how to identify negative ions, including halide ions using silver nitrate and sulfate ions using barium chloride
•  Required practical 7: use of chemical tests to identify the ions in unknown single ionic compounds
•  Chem ONLY: State the advantages of using instrumental methods to identify elements and compounds compared to chemical tests
•  Chem ONLY: Describe the process of and how to use flame emission spectroscopy to identify metal ions; interpret the results of a flame emission spectroscopy tests

Videos

Or watch these:

Bitesize

Whole Topic Powerpoint

Quiz