What will happen if the ice is added to the water? A The ice will undergo a chemical change, melting into a liquid and changing into a new substance.

B The water will undergo a chemical change, freezing into a solid and changing into a new substance.

C The ice will undergo a physical change, melting into a liquid but remaining the same substance.

D. The water will undergo a physical change, freezing into a solid but remaining the same substance.

C

Explanation:

the ice will melt since it is a liquid. for example if u where to have a hot soda and u put ice into it the ice would melt and the liquid would still be soda just colder from the ice i hope this makes since

  the   balanced   equation   for   reaction of   ca metal   with   o2 to   produce   cao   is as below

2 ca+ o2→ 2 cao2

  explanation

the reaction is   balanced     since the   number of atoms   in reactant side is   equal to   number of atoms   in   product side.   for   example   they   are 2   atom of   ca in   reactant   side   and   2   atoms of ca   in   the product side.

  the   process   is a   meet the   requirement   of   redox   reaction because :     calcium   is   oxidized   from   oxidation state 0   to 2+   while   oxygen   is reduced from   oxidation   state   0   to 2-