Calciumflammtest

Calcium an seiner orangeroten Flamme erkennen

Flame Tests Beginner (Middle School) 15 Min. ~$5,00

Ziel

Die ziegelrote bis orangerote Flamme von Calciumionen beobachten, einem häufigen Element in Kalkstein, Marmor und Knochen.

Hintergrund

Calcium produces a distinctive brick-red to orange-red flame color. The emission results from electronic transitions in calcium atoms excited by the flame energy. Calcium is one of the most abundant elements in the Earth's crust and its flame test is a useful diagnostic tool in mineral identification.

Sicherheitswarnungen

  • Wear safety goggles at all times
  • Keep hair tied back near open flames
  • Handle HCl with care

Erforderliche PSA

goggles lab_coat

Materialien

  • Calcium chloride (CaCl₂) (1 g)
    Common road de-icer
  • Hydrochloric acid (HCl) (10 mL)
    1M concentration
  • Distilled water (50 mL)
    For cleaning

Ausrüstung

Bunsen burner Nichrome wire loop Watch glass Forceps

Durchführung

1

Clean the nichrome wire by dipping in HCl and heating until no color appears.

2 Min.
2

Place calcium chloride on the watch glass and collect a sample on the clean wire.

1 Min.
3

Hold the wire in the Bunsen burner flame and observe the flame color.

2 Min.
4

Record the brick-red to orange-red color and note how it differs from strontium and lithium.

2 Min.

Erwartete Ergebnisse

A brick-red to orange-red flame should appear. The color is less vivid than strontium's scarlet and more orange than lithium's crimson. Calcium's flame is moderate in intensity.

Aufräumen

Clean the wire with HCl. Dispose of chemicals per lab protocol.

Details

Kategorie
Flame Tests
Schwierigkeit
Beginner (Middle School)
Dauer
15 Min.
Geschätzte Kosten
$5,00
Schritte
4
Materialien
3

Weitere Experimente

Bariumflammtest 20 min Kaliumflammtest 20 min Kupferflammtest 15 min Lithiumflammtest 15 min Natriumflammtest 15 min Strontiumflammtest 15 min Vergleichslabor für Flammentests 45 min

Frequently Asked Questions

What is the objective of Calciumflammtest?
Die ziegelrote bis orangerote Flamme von Calciumionen beobachten, einem häufigen Element in Kalkstein, Marmor und Knochen.
How difficult is Calciumflammtest?
This experiment is rated as Beginner (Middle School). It takes approximately 15 minutes to complete.
What safety precautions are needed for Calciumflammtest?
Key safety precautions include: Wear safety goggles at all times; Keep hair tied back near open flames; Handle HCl with care.
What materials are needed for Calciumflammtest?
The main materials required are: Calcium chloride (CaCl₂), Hydrochloric acid (HCl), Distilled water.
What results should I expect from Calciumflammtest?
A brick-red to orange-red flame should appear. The color is less vivid than strontium's scarlet and more orange than lithium's crimson. Calcium's flame is moderate in intensity.