Elements and the Periodic Table

Front

What is the atomic number of Argon?

Back

18

Front

How many energy levels or shells does Argon have?

Back

4

Front

What is a property of non-metals?

Back

Non-metals are brittle and break easily.

Front

What subatomic particle has no charge?

Back

Neutron

Front

How did Mendeleev arrange the elements in the periodic table?

Back

By atomic mass.

Front

Which is the lightest alkali metal?

Back

Lithium.

Front

What is the definition of an element?

Back

A pure substance that cannot be broken down into simpler substances by chemical means.

Front

What are the three main types of elements in the periodic table?

Back

Metals, non-metals, and metalloids.

Front

What is the significance of the periodic table?

Back

It organizes elements based on their atomic number and properties.

Front

What is the general trend of reactivity in alkali metals?

Back

Reactivity increases down the group.