Ions and polar molecules are ______ and stay in solution because of their interactions with water’s partial charges.

The pH scale ranges from ______ and is ______.

Black coffee has a pH of about 5, and wine a pH of about 3. This means wine has about ______ times the concentration of protons as coffee.

What are the minimum grades required on the quizzes before taking the associated chapter test?

What is the citation format you will need to master to create your annotated bibliography?

Are you acquainted ____ Brian, our new sales representative?

How many annotations do you need to have for this assignment? 

Your interesting comments have ____ my interest.

All applicants must submit ____ application materials by Friday.

In the sentence They discussed four important issues at the meeting, the word at is a(n) ____.