Flipped 3: Elements & Compounds

  • What is the difference between an element and a compound?

All matter is made from atoms. Atoms are very, very small. A molecule is formed when atoms join together by chemical bonds.

There are over a hundred different types of atom, called elements. The atoms of a particular element are identical to each other. They cannot be changed chemically into any different element. For example a piece of pure sulfur consists only of sulfur atoms. No chemical process can break it down into a different substance.

Compounds are substances that contain atoms of at least two elements chemically combined. For example: magnesium oxide consists of magnesium atoms and oxygen atoms chemically bonded together.

The Periodic Table

  • What is special about each element on the periodic table?

Element vs Compound

A compound is made up of different elements.

The top row here are elements and the bottom are compounds.