Flame Test Lab

What is the purpose of the Flame Test Lab?

• To observe the characteristic colors produced by certain metallic ions when vaporized in a flame and to identify an unknown metallic ion by means of its flame test.

• To measure the temperature of a Bunsen burner.

• To test the solubility of metal chlorides.

• To observe the melting point of metals.

Tags

NGSS.HS-PS1-1

Fill in the blank: The normal electron configuration of atoms or ions of an element is known as the ________ state.

• ground

• excited

• liquid

• plasma

Tags

NGSS.HS-PS1-1

Which of the following is NOT listed as a material needed for the Flame Test Lab?

• Bunsen burner

• Q-tips

• Cobalt glass plates

• Test tubes

The color of light emitted during a flame test can be used to identify the elements involved.

• True

• False

What safety equipment is recommended for the Flame Test Lab?

• Wear goggles and an apron at all times.

• Only wear gloves when handling chemicals.

• No safety equipment is needed for this lab.

• Wear sandals and loose clothing.

According to the procedure, what should you do if you catch the Q-tip on fire during the flame test?

• You can’t reuse it to double check the color of the flame test.

• Blow it out and continue using it as normal.

• Dip it in water and immediately reuse it.

• Ignore it and proceed with the next test.

List any two metal chloride solutions mentioned in the materials section.

• NaCl, CuCl2 (Other correct answers: KCl, CaCl2, SrCl2, LiCl, CoCl2, BaCl2)

• NaNO3, K2SO4

• HCl, H2O

• MgSO4, FeSO4

It is important to use a different clean unused Q-tip for each solution in the flame test because:

• it prevents contamination between solutions.

• it makes the flame test more colorful.

• it helps the Q-tip burn faster.

• it saves time during the experiment.

Based on your observations, identify the three unknowns you examined: Unknown # _____ is ________________________________

Tags

NGSS.HS-PS1-3

Based on your observations, identify the three unknowns you examined: Unknown # _____ is ________________________________

Tags

NGSS.HS-PS1-3