ChemAA Unit 1 + 2.1-2.2 Review

Front

What is a cation?

Back

An ion with a positive charge.

Front

In which period is Sodium (Na) found?

Back

Period 3.

Front

As the particles increase in movement, they begin to _____ more and move faster.

Back

spread out.

Front

What does increasing energy mean?

Back

An increase in movement.

Front

What are metalloids?

Back

Elements that have properties of both metals and nonmetals; sometimes referred to as semiconductors.

Front

What is an anion?

Back

An ion with a negative charge.

Front

What is the atomic number of an element?

Back

The number of protons in the nucleus of an atom.

Front

What is the periodic table?

Back

A table in which all the known elements are arranged by properties and are represented by chemical symbols.

Front

What is the difference between metals and nonmetals?

Back

Metals are good conductors of heat and electricity, while nonmetals are poor conductors.

Front

What is the significance of the atomic mass?

Back

It represents the average mass of an atom of an element, accounting for isotopes.