that black discoloration is known as tarnish, or corrosion. A recommendation would be to not wear jewelry while swimming. The reason all of this is happening is because of the chlorine. Chlorine reacts to silver VERY quickly and will eat the metal away. You have two choices, remove the chlorine (unwise) convert to salt water, or NOT wear silver clad things in the pool
No, if your starting point is sliver wire or bar, the process making jewelry is mechanical, the raw material is heated and forged into jewelry, there is no chemical change.
A chemical change
chemical change
Making a fruit shake or smoothie is not considered a chemical change.
making paper from wood is a what change
Making any type of biscuits is a complex set of chemical changes.
No, it is a physical, not chemical change.
It is a chemical change
No. Making tea is a physical change.
No it is a physical change.
chemical
Chemical reactions