Physical Science U3P3 Vocab.

Front

A one or two letter representation of an element is called a chemical ___________.

Back

symbol

Front

building blocks of matter

Back

atoms

Front

positively charged center of the atom

Back

nucleus

Front

neutral particles in the nucleus

Back

neutron

Front

positive particles in the nucleus

Back

proton

Front

negative particle outside nucleus

Back

electron

Front

Number of protons in the nucleus

Back

atomic number

Front

known as the planetary model

Back

Bohr Model

Front

protons plus neutrons in the nucleus

Back

mass number

Front

modern model of atom

Back

electron cloud