Chemistry Vocabulary

Front

Valence shell

Back

the outermost orbit or shell of an atom

Front

Reactant

Back

A substance that changes during a chemical reaction

Front

What is a chemical reaction?

Back

a change in which a new substance is formed

Front

What is the law of conservation?

Back

In any chemical reaction, mass is neither created nor destroyed

Front

Electron

Back

A negatively charged subatomic particle in orbit around the nucleus

Front

What is a proton?

Back

A positively charged subatomic particle in the nucleus of an atom

Front

neutron

Back

a subatomic particle within the nucleus of an atom with a neutral charge

Front

What is the periodic table?

Back

A chart or table in which elements are arranged by atomic number and electron configuration

Front

What is a chemical bond?

Back

the force that holds the particles of a molecule together