But these water molecules are not completely stable. Before we explore the instability, some definitions are in order. To write very large or very small numbers, scientists use a special notation called scientific notation.
Lets look at some examples.
The number 2.3 million can be represented as 2.3 times one million. Now one million is expressed commonly as 1'000'000. If you count the number of zeros in 1'000'000, you'll see that there are six of them. 2.3 million, or 2'300'000 is then simply written as 2.3 x 106. Put a decimal point after the 5, and count the number of digits after it.