Which factor is a characteristic of an acid?

a: non-Corrosive

b:soapy

c:sour

d:slippery



Which factor is a characteristic of a base?

a:soapy

b:sour

c:non-corrosive

d:slippery



An unknown substance has a pH of 4.0.


Which kind of substance is it?


A:neutral

B:buffer

C:acid

D:base




Which example is a base?


A:hydrogen

B:CO

C:soap

D:HCI



Which statement is the difference in acidic power between pH 3 and pH 2?



A: ph 2 is 10 times more basic than pH 3

B: pH 3 is twice as basic as pH 2

C: pH 2 is 10 times more acidic than pH 3

D: pH 2 is twice as basic as pH 3