1.1. This question is about elements, compounds, and mixtures.

i) Table 1 shows nine substances, which are elements, compounds, or mixtures.

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Table 1

Complete table 2 below using the words from table 1. Every word in table 1 must appear in one of the boxes in table 2.

Table 2

ii) Suggest, with a reason, which substance(s) in table 1 has/have a fixed melting and boiling point.

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1.2. Which statement correctly describes the contents of the box?

1.3. Fractional distillation is used to obtain many fractions from crude oil.

The diagram shows a fractionating column.

i) Complete the missing labels on the diagram.

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ii) Explain how crude oil is separated using a fractionating column.

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1.4. An organic compound has the formula (CH₃COO)₂Ca

i) Determine the number of different elements in (CH₃COO)₂Ca.

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ii) Determine the number of atoms in the formula of (CH₃COO)₂Ca.

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