Given scientific fact as input, generate the question from this fact such that it can be answered from the input.

You call a substance that is not an acid or a base neutral.
What do you call a substance that is not an acid or a base?

Rainfall weather phenomenon increases the rate of weathering in rock and soil.
What weather phenomenon increases the rate of weathering in rock and soil?

Electrostatic repulsions normally prevent a positively charged particle from colliding and reacting with a positively charged nucleus, but may be overcome by kinetic energy.

What normally prevent a positively charged particle from colliding and reacting with a positively charged nucleus, but may be overcome by kinetic energy?