Which material is most dense air ice plastic or gold

What is the definition of atomic number

A mixture is made by mixing 50.0 ml of 0.200 m hcl and 50.0 ml of water. what is its ph?

What is the reaction when magnesium becomes magnesium oxide

How were the atomic models developed given that no one had seen an atom

G vinegar is a solution of acetic acid in water. if a 165 ml bottle of distilled vinegar contains 28.2 ml of acetic acid, what is the volume percent (v/v) of the solution?

Which element has an isotope mass number of 32 and is used as an ecological tracer?

Why do the two elements silver and iron have different properties?

Lons that are present before and after a neutralization reaction are

In chemistry a formula is used to represent

The theory suggests that the Sun, planets, and other celestial bodies of the solar system came from a cloud of dust and gas.