What is the difference between alot and a lot?

Answer 1

'Alot' is not actually a proper word, and cannot be found in any dictionary, but people use it as a quick way of writing a 'A lot'.

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Actually it is in a few dictionaries as a "mispelling for a lot", "See: lot, a lot". People confuse the spelling because most other words in English (like awhile = a + while) are single words in most contexts, depending on if it's a noun phrase (a while as a period of time) or put together to act as an adverb (awhile). A lot is the only word that, when used as an adverb, is not combined into one word.