If you find that a substance turns litmus paper to blue and contains hydroxide ions, it is most likely a. a base. b. water. c. an acid. d. a salt.

If you find that a substance turns litmus paper to blue and contains hydroxide ions, it is most likely

A. a salt.

B. a base.

C. an acid.

D. water.

The correct answer here is B. A base changes the color of litmus from red to blue. Yours will be A. :)

the closer the planet is to the sun, the larger the gravity