Front

What is an element?

Back

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

Front

What gas is released when alkali metals react with water?

Back

Hydrogen.

Front

What is a property of metals?

Back

Malleable.

Front

What is the missing reactant in the reaction: Magnesium + ________ --> magnesium oxide?

Back

Oxygen.

Front

Which is the lightest alkali metal?

Back

Lithium.

Front

What is the periodic table?

Back

A tabular arrangement of elements organized by increasing atomic number.

Front

What are alkali metals?

Back

Alkali metals are highly reactive metals found in Group 1 of the periodic table.

Front

What is the atomic number?

Back

The atomic number is the number of protons in the nucleus of an atom.

Front

What is a compound?

Back

A compound is a substance formed when two or more elements chemically bond together.

Front

What is the difference between an element and a compound?

Back

An element is a pure substance that cannot be broken down, while a compound is made of two or more elements chemically combined.