Question

which statement(s) is/are true for a liquid that has reached its boiling point?
select all that apply
a bubbles cannot form.
b vapor pressure = atmospheric pressure
c vapor pressure < atmospheric pressure
d bubbles can form.

Explanation:

• When a liquid reaches its boiling point, the vapor pressure equals the atmospheric pressure. This allows bubbles (which are pockets of vapor) to form throughout the liquid. If the vapor pressure were less than the atmospheric pressure (as in option c), bubbles couldn't form as the external pressure would collapse them. Option a is incorrect because at the boiling point, bubbles do form.

Answer:

B. vapor pressure = atmospheric pressure, D. Bubbles can form.