Chemistry, 05.04.2021 18:40, szinx

The white powder found on the crime scene was tested by the investigators. One of the powders gave off a purple colour whilst the other gave off a red colour. What technique is used to test out these chemicals ?
What type of chemicals are the powders made up of ?

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The white powder found on the crime scene was tested by the investigators. One of the powders gave off a purple colour whilst the other gave off a red colour. What technique is used to test out these chemicals ? What type of chemicals are the powders made up of ?

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The white powder found on the crime scene was tested by the investigators. One of the powders gave off a purple colour whilst the other gave off a red colour. What technique is used to test out these chemicals ?
What type of chemicals are the powders made up of ?