Chemistry riddles

I am a state of matter whose particles have the strongest intermolecular forces. What state am I?

I am the process where a liquid turns into a gas at its surface, even below its boiling point. What process am I?

I am the number of protons in an atom. What am I?

I am a substance that speeds up a chemical reaction without being consumed in the process. What am I?

I am a type of bond where electrons are shared between atoms. What am I?

I am a solution with a pH greater than 7. What am I?

I am a gas that makes up about 78% of Earth's atmosphere. What gas am I?

I'm a mixture used in fireworks. If I'm heated, I can create a dazzling display of colors in the sky. My main ingredient

I'm part of a group of unreactive elements and are often found in bulbs. What group I belong to?

I am the only metal that is liquid at room temperature. Often, I am used in thermometers. What am I?

I am a substance that cannot be broken down into simpler substances by chemical means. What am I?