Question

18)

A chemical reaction occurs when
A) O₂(g) forms O3(g)
B) O₂(l) forms O₂(s)
C) H₂O(g) forms H₂O()
D) H₂O() forms H₂O(s)

Answer 1

See below.

Step-by-step explanation:

A chemical reaction occurs when

A) O₂(g) forms O3(g) Yes. a new bond is formed.

B) O₂(l) forms O₂(s) No. No new bonds, just a phase change.

C) H₂O(g) forms H₂O(l?) No. No new bonds, just a phase change.

D) H₂O(L?) forms H₂O(s) No. No new bonds, just a phase change.