Question

1. an unknown substance is added to a solution and the ph increases. the substance is a:

a) acid
b) base
c) solvent
d) sweet

1. a solution with a ph of ___ is considered to be neutral.

a) 0
b) 1
c) 7
d) 14

Explanation:

For question 4, acids lower pH, solvents don't change pH significantly in this context, and "sweet" is not relevant. Bases increase pH. For question 5, by definition, a pH of 7 is neutral, 0 - 6 is acidic, and 8 - 14 is basic.

Answer:

1. B. base
2. C. 7