instruction:
Given a scientific question, generate a correct answer to it.
question:
What is the name of the "point" that refers to the temperature at which water vapor condenses?
answer:
dew point

question:
What is at the surface of a cell, arranged in similar bilayer?
answer:
phospholipids

question:
The properties of the alkali metals are similar to each other as expected for elements in the same what?
answer:
family