What is the only subatomic particle that is directly involved in the chemical reactions?

In a popular classroom demonstration, solid sodium is added to liquid water and reacts to produce hydrogen gas and aqueous sodium hydroxide. part a write a balanced chemical equation for this reaction. express your answer as a chemical equation. identify all of the phases in your answer.

How many moles are equivalent to 55.5g of nano3

Describe the difference between a. a hypothesis and a theory and b. an observation and an experiment.