Sentence completion
Foundation tier papers may include questions in which you have to complete a sentence. Some of these questions include words to choose from in a box. You do not have to use all the words - some of them will be wrong.
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Sample question 1 - Foundation
Question
Crude oil is a mixture of many different carbon compounds.
Crude oil can be separated into useful fractions by fractional distillation.
The image shows a column used to separate crude oil.
Use words from the box to complete the sentences. [2 marks]
| condense | evaporate | freeze |
| condense |
| evaporate |
| freeze |
Crude oil is heated so that most of the compounds ______.
At different temperatures the compounds cool and ______.
Crude oil is heated so that most of the compounds evaporate.
At different temperatures the compounds cool and condense.
Sample question 2 - Foundation
Question
Use the correct word from the box to complete the sentence. [1 mark]
| cross links | a giant ionic lattice | strong covalent bonds |
| cross links |
| a giant ionic lattice |
| strong covalent bonds |
Graphite has a high melting point because graphite has ______.
Graphite has a high melting point because graphite has strong covalent bonds.
