칼슘 불꽃 반응

주황-빨간색 불꽃으로 칼슘 확인하기

Flame Tests Beginner (Middle School) 15 분 ~$5.00

목표

칼슘 이온이 나타내는 벽돌색에서 주황-빨간색 불꽃을 관찰한다. 칼슘은 석회암, 대리석, 뼈에 포함된 일반적인 원소이다.

배경

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.

안전 경고

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

필수 개인 보호 장비

goggles lab_coat

재료

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

장비

Bunsen burner Nichrome wire loop Watch glass Forceps

실험 절차

1

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

2 분
2

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

1 분
3

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

2 분
4

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

2 분

예상 결과

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.

정리

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

세부 정보

카테고리
Flame Tests
난이도
Beginner (Middle School)
소요 시간
15 분
예상 비용
$5.00
단계
4
재료
3

더 많은 실험

스트론튬 불꽃 반응 15 min 나트륨 불꽃 반응 15 min 구리 불꽃 반응 15 min 리튬 불꽃 반응 15 min 바륨 불꽃 반응 20 min 칼륨 불꽃 반응 20 min 불꽃 반응 비교 실험 45 min

Frequently Asked Questions

What is the objective of 칼슘 불꽃 반응?
칼슘 이온이 나타내는 벽돌색에서 주황-빨간색 불꽃을 관찰한다. 칼슘은 석회암, 대리석, 뼈에 포함된 일반적인 원소이다.
How difficult is 칼슘 불꽃 반응?
This experiment is rated as Beginner (Middle School). It takes approximately 15 minutes to complete.
What safety precautions are needed for 칼슘 불꽃 반응?
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 칼슘 불꽃 반응?
The main materials required are: Calcium chloride (CaCl₂), Hydrochloric acid (HCl), Distilled water.
What results should I expect from 칼슘 불꽃 반응?
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.