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.
For the most part, only tax records need to be kept for seven years. You should keep copies of your tax returns with their supporting documents (statements, receipts, etc.). I like to put all of my tax documents and supporting papers in a manila envelope labeled with the tax year, and then safely stored.