What does below chemistry rebus means?

What is harder to catch the faster you run?

Three ants are sitting at the three corners of an equilateral triangle. Each ant starts randomly picks a direction and starts to move along the edge of the triangle. What is the probability that none of the ants collide?

What 5-letter word typed in all capital letters can be read the same upside down?

Which is heavier: a ton of bricks or a ton of feathers?

Can you identify the direction in which this bus is moving; left or right?

Hint: The bus is moving on the roads of London.

Luis Garavito killed Density x Volume.

Who is Luis Garavito ?

What you cannot hold but it is yours?

what does this below rebus represent identXQQQQQME

Remove two matchsticks to make the below equation correct.