. A green colour substance 'X' is heated strongly. Its colour changes to 'Y' and smell of burning sulphur is given out. a. Name the substances X and Y.
b. Name the type of reaction taking place.
c. Write the balanced chemical equation for the reaction.

answer; /// the amount of material dissolved in a measure of liquid(concentration) the above statement is (true); /// good luck

because of all the things that happen around the us, many people get into arguments which sadly could get physical, but we should actually make a change for that.