Page 92 - Sri Sri Patrika September 2021

Subject: Chemistry
Topic: Chemistry of salts
th
Date: 4 September 2021
Activity: Take a pinch of any one of the following salts in a stainless spoon
and introduce it into the blue part of the flame - sodium chloride, baking

soda, powdered alum, powdered calcium tablets, powdered Epsom salt.
Observe the colour of the flame. Some metals give characteristic colour to
the flame. Ex: Sodium salts give golden yellow coloured flame.

The students identified the different colours produced while heating sodium
chloride (golden yellow due to sodium), baking soda (golden yellow),
powdered alum (light violet) due to potassium, powdered calcium tablets

(brick red colour due to calcium) and powdered Epsom salt (white colour
due to magnesium).
The flame identification test was done by Arjun of Std XA with sodium

chloride and baking soda.