The Is There Sodium In Bananas? Flame Test Chemistry Demonstration Kit is a safe flame test for viewing excited-state emission colors of three different metal ions. Metal properties, emission spectra, and more are represented in one kit.
Bananas are a good source of potassium—but do they also contain sodium? This flame test demonstration provides a safe, unique method for observing flame test colors of metal ions—no flammable solvents required! Demonstrate the characteristic colors produced by three different metal ions and then let students identify which ions are present in bananas. By the way, the answer to the question is yes—in more ways than one! Includes Teacher Demonstration Notes, reproducible student worksheets and enough materials to perform both parts of the demonstration seven times.
Concepts: Properties of metals, atomic structure, emission spectra, nutrients in food. Time Required: 20 minutes Note: Borosilicate glass Petri dishes are required and available separately.
Correlation to Next Generation Science Standards (NGSS)
Science & Engineering Practices
Constructing explanations and designing solutions Analyzing and interpreting data
Disciplinary Core Ideas
MS-PS1.A: Structure and Properties of Matter HS-PS1.A: Structure and Properties of Matter