Write the probability scale from impossible to certain.

Step 1: Write the probability scale.
The probability scale ranges from 0 (impossible) to 1 (certain). It can be described using words:

$$\text{Impossible} \rightarrow \text{Unlikely} \rightarrow \text{Even Chance} \rightarrow \text{Likely} \rightarrow \text{Certain}$$

Numerically, this corresponds to:

$$0 \rightarrow \text{between } 0 \text{ and } 0.5 \rightarrow 0.5 \rightarrow \text{between } 0.5 \text{ and } 1 \rightarrow 1$$

The probability scale from impossible to certain is:

$$\boxed{\text{Impossible} \rightarrow \text{Unlikely} \rightarrow \text{Even Chance} \rightarrow \text{Likely} \rightarrow \text{Certain}}$$