Human blood has an approximate ph of 7.3. which substance is more basic than human blood?
a. a human stomach's digestive juices with a ph of 2
b. a water and ammonia solution with a ph of 11
c. apple juice with a ph of 3.0
d. grape juice with a ph of 4.5

so, 7 is neutral anything past 7 is considered basic.

a water and ammonia solution with a pH of 11 (very basic).

any number under 7 is acidic and of course there are different degrees of acidic just like there are different degrees of basicity.   

- stomach's digestive juices, would be considered very acidic

-apple juice is also acidic but not as acidic  like stomach juices.

- grape juice, is becoming less acidic.

Hopefully this helped and good luck.