Unit 2 Properties of Atoms & Periodic Table

Front

What are the vertical columns on the periodic table that have common properties called?

Back

Groups

Front

Which subatomic particles are located the farthest from the nucleus?

Back

Valence electrons

Front

How many neutrons does an atom of the isotope Neon-22 have?

Back

12

Front

What does a mixture consist of?

Back

A combination of two or more substances that are not chemically bonded.

Front

What are the elements in group 18 (the far right) of the periodic table called?

Back

Noble gases

Front

What is the atomic number of an element?

Back

The number of protons in the nucleus of an atom.

Front

What is the difference between an element and a compound?

Back

An element is a pure substance made of one type of atom, while a compound is made of two or more different types of atoms chemically bonded together.

Front

What are alkali metals?

Back

Elements in group 1 of the periodic table, known for being highly reactive.

Front

What are halogens?

Back

Elements in group 17 of the periodic table, known for their reactivity and tendency to form salts.

Front

What is the significance of valence electrons?

Back

They determine how an atom can bond with other atoms.