Introduction to Flame Test Lab

Front

What is the purpose of the flame test?

Back

To identify the presence of certain metal ions based on the color of the flame produced.

Front

What safety equipment should be worn during the flame test?

Back

Safety glasses should be worn to protect your eyes.

Front

What should you do to prevent gas leaks when not using the Bunsen burner?

Back

Ensure the gas valve is turned off.

Front

How do you light a Bunsen burner?

Back

Turn the gas jet 1/4 of a turn to allow gas flow, use a lighter to ignite the gas at the top of the burner, and ensure air intakes are open for a clean blue flame.

Front

What does a light blue flame indicate?

Back

A light blue flame indicates complete combustion, which is ideal for the experiment.

Front

How do you extinguish the Bunsen burner flame?

Back

Turn the gas valve to the off position.

Front

What materials are required for the flame test?

Back

Various metal salts (potassium, copper, strontium, sodium, barium, calcium, lithium, and two unknowns), distilled water, and clean cotton swabs.

Front

What is the procedure for conducting the flame test?

Back

Moisten a clean cotton swab with distilled water, dip it into the salt sample, place it in the flame, and observe and record the flame color.

Front

What should be included in the data collection for the flame test?

Back

A data table to record the flame colors for each salt tested, including observations for the two unknown salts.

Front

What should be analyzed in the lab report?

Back

Analyze the flame colors observed and relate them to the metal ions present in the salts, and discuss the chemical principles behind the flame test.