Question

what is scum? how it is formed?​

Answer 1

Answer:

When soap is added to hard water it reacts with salts to form scum which is insoluble in water and floats on the top of the water surface.

Mark Brainliest if found helpful.

Answer 2

Answer:

When soap is added to hard water it reacts with salt to form scum

Please mark me as brainliest answer please yaar please