8th Grade Periodic Table

Front

Which group of the periodic table is composed of inert (not reactive) gases?

Back

Noble gases are the group of the periodic table that are composed of inert gases, including helium, neon, argon, krypton, xenon, and radon.

Front

How many elements are in the periodic table?

Back

There are 118 elements in the periodic table.

Front

What is the atomic number for an element with three protons?

Back

The atomic number for an element with three protons is 3.

Front

What is a 'pure' substance that cannot be separated or broken down into simpler substances?

Back

An element is a pure substance that cannot be separated or broken down into simpler substances.

Front

What charge does a neutron have?

Back

A neutron has no charge.

Front

What is the term for a substance made of two or more different elements that are chemically bonded?

Back

A compound is a substance made of two or more different elements that are chemically bonded.

Front

What is the term for a horizontal row in the periodic table?

Back

A period is a horizontal row in the periodic table.

Front

What is the term for a vertical column in the periodic table?

Back

A group (or family) is a vertical column in the periodic table.

Front

What is the most reactive group of metals in the periodic table?

Back

The alkali metals are the most reactive group of metals in the periodic table.

Front

What is the term for elements that have properties of both metals and nonmetals?

Back

Metalloids are elements that have properties of both metals and nonmetals.