Question bank2.1 Purity and separating mixtures

2.1 Purity and separating mixtures

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Question 9

Chocolate is made from cocoa solids, cocoa butter, sugar and milk.

A quality-control test finds that two batches of the same chocolate both soften gradually between $∘C30\,^\circ\mathrm{C}$ and $∘C34\,^\circ\mathrm{C}$ .

Which conclusion about the two batches is correct?

[1]

Each batch is a pure substance, because both batches soften over exactly the same temperature range.

Each batch is a formulation, and the matching ranges indicate that the components were mixed in the same proportions.

Each batch is a compound, because its components are bonded together in a fixed ratio.

Each batch is impure, because an unwanted substance has been added to both batches by mistake.

Chocolate is made from cocoa solids, cocoa butter, sugar and milk.

A quality-control test finds that two batches of the same chocolate both soften gradually between $∘C30\,^\circ\mathrm{C}$ and $∘C34\,^\circ\mathrm{C}$ .

Which conclusion about the two batches is correct?

Each batch is a pure substance, because both batches soften over exactly the same temperature range.

Each batch is a formulation, and the matching ranges indicate that the components were mixed in the same proportions.

Each batch is a compound, because its components are bonded together in a fixed ratio.

Each batch is impure, because an unwanted substance has been added to both batches by mistake.

2.1 Purity and separating mixtures

Question 9

Markscheme

2.1 Purity and separating mixtures

Question 9

Markscheme

2.1 Purity and separating mixtures

Question 9

2.1 Purity and separating mixtures Questions

2.1 Purity and separating mixtures

Question 9

2.1 Purity and separating mixtures Questions