What does below chemistry rebus means?

I am sometimes honest
Sometimes dishonest
I can be sweet and also bitter
I can hurt you real bad and
also make u smile and blush ☺️
What am I?

A man in a car saw a Golden Door, Silver Door and a Bronze Door. What door did he open first?

Two fathers and two sons went fishing one day. They were there the whole day and only caught 3 fish. One father said, that is enough for all of us, we will have one each. How can this be possible?

A man hijacks an aeroplane transporting both passengers(8 of them) and valuable cargo. After taking the cargo, the man demands nine parachutes, puts one of them on, and jumps, leaving the other eight behind. Why did he want eight?

If there are fifteen crows on a fence and the farmer shoots a third of them, how many crows are left?

You’ll find me on Mercury, Earth, Mars, Jupiter, Saturn, and Uranus. But never Neptune, or Venus. What am I?

Baseball bat and ball cost $100. If the bat cost $99 more than the ball, what is the cost of each?

What word is represented by this rebus?

Can you count the number of triangles in the picture below?