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.
Tips for Managing Your Tax Records. After you file your taxes, you will have many records that may help document items on your tax return. You will need these documents should the IRS select your return for examination. Here are five tips from the IRS about keeping good records. Normally, tax records should be kept for three years. Some documents â such as records relating to a home purchase or sale, stock transactions, IRA and business or rental property â should be kept longer. In most cases, the IRS does not require you to keep records in any special manner.