Make a list of physical changes and chemical changes that you observe or see effects of in the school

What type of reaction is zn + cucl2 → cu + zncl2?

What is limiting reactant? with examples

Which function is performed by earths atmosphere? a. ultraviolet rays are prevented from reaching the ozone layer. b. earths temperature is raised and moderated by trapping in heat c. charged particles from the sun are prevented from reaching earth. d. magnetic charges from space are prevented from reaching earths surface.