Skip to content
Your progress

Checking your sign-in…

Who's learning?

Each profile keeps its own read lessons, badges, streak, and practice scores on this device.

Lesson 3 of 18

An agreed short name

Show on a big screen

6 min

Text size

Copper is tamba in Hindi. Scientists everywhere write it the same short way.

The name: Copper.
Step 1 of 3
  1. The name: Copper.
  2. Three ways to write its mark.
  3. Only Cu is correct: capital, then small.

A symbol is the short mark for an element.

The rule

Every element has an agreed symbol. It starts with a capital letter. A second letter, if there is one, is small. Some symbols come from older names.

Six symbols, and where each one came from
ElementSymbolWhere the letters came from
CarbonCThe first letter of the name
NitrogenNThe first letter of the name
CalciumCaThe first two letters of the name
SodiumNaAn older name, natrium
IronFeAn older name, ferrum
CopperCuAn older name, cuprum

Build the symbol for five elements. Drag or tap the letters.

Loading lab…

Try the lab to finish this lesson.