Question

Which of the following equations shows a physical change?

Responses

H2O(s) → H2O(l)
N2O5 → NO2 + O2
CaCO3 → CaO + CO2
C12H22O11 + 12O2 → 12CO2 + 11H2O

Answer 1

[AI-generated answer — Bot GPT 3.5]

The equation H2O(s) → H2O(l) shows a physical change because it represents the solid form of water melting into its liquid form.