What does below chemistry rebus means?

What building has the most stories?

What is in seasons, seconds, centuries and minutes but not in decades, years or days?

I am a type of food that is often found in the fridge and can be white in colour. What I am?
Hint 1: I am a dairy product.
Hint 2: You can spread me on the bread.

Can you place three balls such that the equation shown in the picture holds true?

Can you find the hidden animal in the picture below?

If you had a pizza with crust thickness 'a' and radius 'z', what's the volume of the pizza?

It is a 5 letter word if you take away first letter it is something you get from sun, if you remove second letter you will get something to eat, if you remove third letter you get a word you use in pointing at and if you remove the fourth letter you get something to drink. What is it?

What can go through glass without breaking it?

A word I know has six letters it contains, remove one letter and 12 remain. What is it?