Procedure. 1  Start with a short lecture on the nature of solid, liquid, and gaseous water. 2  Your goal is to give some understanding that water molecules themselves don't change when the state of the matter changes, but that the interaction between molecules changes.
Check out our guide of what to toss when. Is your important paperwork piling up? Check out our easy-to-use chart to see what to keep, what to toss, and how to store those hard-to-replace documents. Keep tax returns, as well as supporting documents like W-2 forms, receipts, and real estate closing statements for seven years.
The Three Year Rule. In general, you should plan to keep your tax records for three years from the date the return was filed, or from the due date of the tax return (whichever is later). If you filed your return early, itâs treated as being filed on the due date. An example of the three year rule.