Question
Which of the following equations shows a physical change?(1 point)
Responses
N2O5 → NO2 + O2
N2O5 → NO2 + O2
C12H22O11 + 12O2 → 12CO2 + 11H2O
C12H22O11 + 12O2 → 12CO2 + 11H2O
H2O(s) → H2O(l)
H2O(s) → H2O(l)
CaCO3 → CaO + CO2
Responses
N2O5 → NO2 + O2
N2O5 → NO2 + O2
C12H22O11 + 12O2 → 12CO2 + 11H2O
C12H22O11 + 12O2 → 12CO2 + 11H2O
H2O(s) → H2O(l)
H2O(s) → H2O(l)
CaCO3 → CaO + CO2
Answers
GPT-4o mini
A physical change involves a change in the state or appearance of a substance without altering its chemical composition. Among the provided equations, the one that represents a physical change is:
**H2O(s) → H2O(l)**
This equation shows the transition of water from solid (ice) to liquid (water), which is a physical change. The other equations involve chemical reactions where the substances change into different chemical substances.
**H2O(s) → H2O(l)**
This equation shows the transition of water from solid (ice) to liquid (water), which is a physical change. The other equations involve chemical reactions where the substances change into different chemical substances.