What does below chemistry rebus means?

We can be boring,Or interesting.
We can be long,Or short.
We can have pictures,Or just words.
Many love us,But many also hate us.
What are we?

what does this picture(rebus) riddle means ?

What does this rebus puzzle means ?

If you paint a brown house white it will become a white house. If the stoplight changes from red to green, then the light is green. So, if you throw a white shirt into the Red Sea, what will it become?

Move four matchsticks to the below square to form three squares?

Make eight squares by moving only two matchsticks.
Note- Square can be of different sizes.

What is black when you buy it, red when you use it, and gray when you throw it away?

A boy collects white seashells from the sea and brings them home every night. When he has enough of them, he decides to sell them to a trader.

The trader is ready to buy the shells and he asks the boy about the quantity. At this, the boy starts calculating. He has a giant box that contains 3 mini boxes. Two of them have another mini box inside. If the giant box can hold 50 shells, how many brown shells can he sell to the trader?

How can you leave a room with two legs and return with six legs?