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Analysing & Identifying Substances

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A student tests the melting point of a sample of sulfur. It starts melting at 95-101°C but does not melt completely until the temperature is 113°C. According to a data book, the melting point of sulfur is 115°C. Is this sample of sulfur pure or impure?

It is impure, because it melts over a range of temperatures, and the melting point is not the same as the 'standard' reference melting point for sulfur.

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Pure substances - Analysing and identifying substances - AQA - GCSE Chemistry (Single Science) Revision - AQA - BBC Bitesize

# data[].attributes.attachment_link.description
A student tests the melting point of a sample of sulfur. It starts melting at 95-101°C but does not melt completely until the temperature is 113°C. According to a data book, the melting point of sulfur is 115°C. Is this sample of sulfur pure or impure?

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Analysing Substances

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Flame tests for metal ions - Analysing substances - AQA - GCSE Chemistry (Single Science) Revision - AQA - BBC Bitesize

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Learn how to detect and identify ions with Bitesize GCSE Chemistry (AQA).

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Sample Exam Questions

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Chemistry of the atmosphere - Multiple choice questions - Sample exam questions - Chemistry of the atmosphere - AQA - GCSE Chemistry (Single Science) Revision - AQA - BBC Bitesize

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Get ready for your exams with this BBC Bitesize GCSE Chemistry of the atmosphere (AQA) exam preparation guide.

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Analysing & Identifying Substances

# data[].attributes.attachment_link.readable_text
A student tests the melting point of a sample of sulfur. It starts melting at 95-101°C but does not melt completely until the temperature is 113°C. According to a data book, the melting point of sulfur is 115°C. Is this sample of sulfur pure or impure?

It is impure, because it melts over a range of temperatures, and the melting point is not the same as the 'standard' reference melting point for sulfur.

# data[].attributes.attachment_link.title
Pure substances - Analysing and identifying substances - AQA - GCSE Combined Science Revision - AQA Trilogy - BBC Bitesize

# data[].attributes.attachment_link.description
A student tests the melting point of a sample of sulfur. It starts melting at 95-101°C but does not melt completely until the temperature is 113°C. According to a data book, the melting point of sulfur is 115°C. Is this sample of sulfur pure or impure?

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Sample Exam Questions]

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Multiple choice questions - Sample exam questions - Chemical analysis - AQA - GCSE Combined Science Revision - AQA Trilogy - BBC Bitesize

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Get ready for your exams with this BBC Bitesize GCSE Combined Science chemical analysis (AQA) exam preparation guide.