Physical Science Quarter 1 Vocabulary

Front

Comparison of a measurement to an accepted value

Back

Accuracy

Front

Element in Group 1 of the periodic table with one valence electron, highly reactive, forms 1+ cation.

Back

Alkaline Metals

Front

Group 2 element with 2 valence electrons, forms 2+ cation, very reactive.

Back

Alkaline Earth Metals

Front

Negatively charged ion

Back

Anion

Front

Building block of matter; made of protons, electrons, and usually neutrons.

Back

Atom

Front

Weighted average of the masses of all naturally occurring isotopes of an element

Back

Atomic Mass

Front

Unique number of protons in an element's atom

Back

Atomic Number

Front

A compound made from two elements

Back

Binary Compound

Front

Atomic model where electrons travel in distinct energy levels at fixed distances from the nucleus.

Back

Bohr Model

Front

Positively charged ion

Back

Cation