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 monthly statements for one year; you can dump them if your annual statement summarizes all activity. Keep the yearly summaries as long as you own the security, plus seven years. You need proof of your purchases to prove capital gains and losses on your tax return.nce you've purged, separate must-keep papers into three categories: those you need to keep for one calendar year, those you need to keep for a longer period and hard-to-replace documents like birth and marriage certificates. (See chart: What records to keep, how long to keep them .) Then decide on a home for each.