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What is a substance that cannot be separated into simpler substances by chemical means?
Informal Notes
Casual, non-official records or messages that may lack structure but convey necessary information or reminders.
Personal
Referring to or pertaining to an individual, their private life, or their personal belongings.
Informal Nature
Characterizing situations, relationships, or behaviors that are casual or not bound by formal rules, regulations, or procedures.
Letter Style
The font or design of the alphabet in written communication, which can vary in formality and aesthetic.
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