A)Completaţi ecuaţiile chimice următoare cu formulele chimice şi coeficienţii adecvaţi: 2Ca +O2...CaO
...CuCl2 +... CuSO4 + ... HCl
...KClO3... +...O2
...AgNO3 +... H2SO4... +...
...H2 +... N2 ...NH3 1 punct
b) numiți şi clasificaţi substanţele din primele 2 ecuaţii de mai sus.

Which of your 24 wells had indications that a chemical reaction occurred? how were you able to tell that a chemical reaction occurred? which of your 24 wells had indications that a physical reaction occurred? how were you able to tell that a physical reaction occurred? report on both mixing and evaporation. make a general statement about whether your hypotheses were validated or rejected. must your hypotheses be correct for this to be a successful laboratory?