1. 2 Explain the meaning of each of the following
terms. In your answer include an example to help
with your explanation.
a Expansion.
d Sublimation.
b Contraction.
e Diffusion.
c Physical change. f Random motion.
a Nar
b Na
c Na
sol
d De
so

Many free radicals combine to form molecules that do not contain any unpaired electrons. the driving force for the radical–radical combination reaction is the formation of a new electron‑pair bond. consider the chemical equation. n(g)+no(g)⟶nno(g) n(g)+no(g)⟶nno(g) write lewis formulas for the reactant and product species in the chemical equation. include nonbonding electrons. n(g)n(g) select draw rings more erase select draw rings more erase select draw rings more erase n no(g)