The ph scale is used to tell if a
substance is an acid or base.
substances with a ph of 7 are
neutral. an acid is anything below
7 and a base is anything above 7.
if a certain substance has a ph of
11, what type of substance is it?
a. acid
b. base
c. neutral

Base

Explanation:

Because we know that an acid is anything below 7 and a base is anything above 7. So in this situation, a subtance has a pH of 11 means 11 > 7.

Therefore, the substance would be a base.

Hope this help :3

what following? you said which of the following. but there is no be more specific.

dna is made up of six smaller molecules -- a five carbon sugar called deoxyribose, a phosphate molecule and four different nitrogenous bases (adenine, thymine, cytosine and guanine).