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.
Keep for seven years If you fail to report more than 25 percent of your gross income on your tax returns, the government has six years to collect the tax or start legal proceedings. So when it comes to determining how long to keep tax recordsâelectronic and paperâ we recommend seven years, just in case. Keep forever Essential records such as birth and death certificates, marriage licenses, divorce decrees, Social Security cards, and military discharge papers