What does below chemistry rebus means?

Keyboard words are not in alphabetical order, Why?

As you can see that fifteen matches have been used to form an arrangement. What you have to do is remove any six of them to make them ten.

In a jungle where there are no street lights or any other artificial source of lights, I notice a black snake crossing the road.
How did I get sight of the snake?

I can turn polar bears white.
I can make anyone dance.
I can make everyone cry
I can make your hands clap
I can make you thin.
I can make you smile.
I can make you smile

Can you guess the riddle?

Can you name some countries which do not have the alphabet 'A' in them?

The owner of a popular clothing store comes up with his own method of pricing items. A vest costs $8, socks cost $10, a tie costs $6, and a blouse costs $12. Using the owner’s method, how much would a pair of underwear cost?

Can you identify the hidden rebus in the image below?

What do the following words have in common?

Assess
Banana
Dresser
Grammar
Potato
Revive
Uneven
Voodoo

Can you solve the below geography rebus by decoding the below rebus ?