Concept:
A figure of speech is a stylistic device used to make language more expressive. A simile is a figure of speech that compares two different things using words such as "as" or "like".
Step 1: Understand the phrase.
The phrase "as white as snow" compares the whiteness of something to snow.
Step 2: Identify the comparison word.
The use of the word "as" indicates a direct comparison.
Step 3: Determine the figure of speech.
Since the comparison uses "as", it is a simile.