Which of the following macroscopic processes is most correctly classified as a…
CHEMISTRY · Single correct · AP · Chemistry · Chemical Reactions · Chemical Reactions
Problem
Which of the following macroscopic processes is most correctly classified as a chemical change?
(a) Dissolving table salt (NaCl) in water to make an aqueous solution
(b) Sublimation of dry ice (CO₂) at room pressure
(c) Electrolysis of liquid water to form H2(g) and O2(g)
(d) Melting of iron at 1538 °C