Which of the following is not a property of a base?

a. feel slippery to the touch
b. change red litmus to blue
c. have a sour taste
d. produce oh- ions

Why does earth rotate? because earth is formed from cold gases collapsing due to gravity because the matter in the nebula that formed earth was spinning because earth forms more than 99% of the mass of the solar system because the hydrogen atoms inside the nebula fused to form helium