Question

write your observation for following :
Calcium salt undergoes flame test .​

Answer 1

Answer:

Objectives

By the end of this demonstration, students should be able to  :

1) Use flame tests to identify a metal or metallic salt by the color that it 2) 2) 2) produces when it is put into a flame.

3) Calculate the frequency of light given its wavelength.

4) Calculate the wavelength of light given its frequency.

5) Identify an unknown metal by the color it emits when passed through a flame.

Chemistry Topics  -

This lesson supports students’ understanding of  :

1) Energy

2) Electromagnetic Spectrum

3) Atomic structure

4) Atomic spectra

5) Electrons

6) Visible light spectrum

7) Time

Materials  :

7, 100 mL beakers

Wooden splints (number depends upon how many times the demo will be performed)

1 Bunsen burner

1 Striker

50 mL of 1.0M Barium Chloride (BaCl2) - Note: Barium chloride is highly toxic. Do not ingest the salt or solution.

50 mL of 1.0M Calcium Chloride (CaCl2)

50 mL of 1.0M Copper Chloride (CuCl2)

50 mL of 1.0M Lithium Chloride (LiCl)

50 mL of 1.0M Potassium Chloride (KCl)

50 mL of 1.0M Sodium Chloride (NaCl)

50 mL of 1.0M Strontium Chloride (SrCl2)

Deionized water

250 mL beaker or plastic or cardboard cup half full of water

Class copies of the visible light spectrum chart showing wavelength and frequency values

Example

Safety  -

Barium chloride is highly toxic. Do not ingest the salt or solution.

Students should wear proper safety gear during chemistry demonstrations. Safety goggles and lab apron are required.

Wear proper personal protective equipment when preparing and working with solutions.

Always use caution around open flames. Keep flames away from flammable substances.

Always be aware of an open flame. Open flames can cause burns. Do not reach over it, tie back hair, and secure loose clothing.

Wash hands after handling materials used to prepare for or perform this experiment.

                           I hope this answer will help you.......