Keep away from the acids in the science room.

what is the adverb in the sentence and what are the word or words that each adverb modifies?

The adverb is the same as one you correctly identified early.

What is the verb?

*earlier (not early)

Keep is the verb? Away is the adverb?

Right! :-)

The adverb in the sentence is "away." It modifies the verb "keep."

To identify the adverb in the sentence, follow these steps:
1. Identify the main verb in the sentence, which is "keep."
2. Ask the question "How does one keep?" The answer is "away," indicating that "away" is an adverb modifying the verb "keep."

In terms of what "away" modifies, it provides information on how to keep. It suggests keeping at a distance or in a separate location. Hence, it modifies the preposition "from," creating the phrase "from the acids in the science room." Together, they indicate that one should keep away from the acids in the science room.