Physical Science Final Review

Front

The smallest unit of matter.

Back

atom

Front

Positively charged subatomic particles

Back

protons

Front

A subatomic particle with a neutral or no charge

Back

neutrons

Front

The number on the periodic table for each element that shows how many protons and electrons it contains.

Back

atomic number

Front

The number of outermost electrons in the atomic structure.

Back

valence electrons

Front

An organized diagram of all the elements.

Back

periodic table

Front

A negatively charged subatomic particle.

Back

electrons

Front

Two or more forms of the same element that contain equal numbers of protons but different numbers of neutrons and therefore different mass numbers.

Back

isotope

Front

Group 2 of the periodic table contains 2 valence electrons and are also very reactive especially with the carbon family.

Back

alkaline earth metals

Front

Group 7 of the periodic table, that starts with Fluorine, is not as reactive as the lower numbered groups but still commonly reacts with group 1.

Back

halogens