FORENSICS LAB INVESTIGATION: Identifying Unknowns [Flame Test]


This Testing Unknown Substances Found at a Crime Scene lab investigation includes a Forensics twist on the traditional Flame Test.

10 pages – 3 MB – Zip


Are you looking for an engaging Forensics lab investigation that is sure to excite your students? Then look no further! This Testing Unknown Substances Found at a Crime Scene lab investigation includes a Forensics twist on the traditional Flame Test lab. Students will receive evidence and a letter from a local detective asking them to test the unknown sample of evidence to determine its identity. Students will burn various salts and record their chemical properties on their EDITABLE student answer document. Then, they will identify their salts and compare them to the evidence to solve the crime! This lab was designed for Forensics students but can be used in Physical Science and Chemistry classes for a fun twist on chemical properties.

What’s Included:

✅Teacher Set-Up Instructions (with pictures)

✅EDITABLE Student Lab Sheet

✅EDITABLE PowerPoint lesson to use at the beginning of the lab


What’s Needed:

Various salts

✅Bunsen burner w/ striker

✅Small centrifuges/containers for chemicals

✅Metal probe (for burning salts)

✅ Diluted Hydrochloric acid (for cleaning between tests)


Be sure to check out these Forensics Activities:


Forensic Science: Investigative Processes Classroom Escape Activity

Forensics Activity: Blood Spatter Webquest

Forensics Case Study Project: Making a Murderer (Steven Avery)

Forensics: Innocence Project Research Activity


• BUNDLE & SAVE 50% →Introduction to Forensics- Complete Unit Bundle

Additional information

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FORENSICS LAB INVESTIGATION: Identifying Unknowns [Flame Test]