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.
In a nutshell, to be conservative keep documents a minimum of 7 years if the document supports a deduction on your tax return. If the outlay or deposit of cash resulted from acquiring or selling an asset, keep the documentation for 7 years after the sale of the asset.eality is that destroying business records too soon or keeping business records them too long (subpoenaed and introduced in evidence to support the claims of adversaries) has cost organizations millions of dollars in penalties, lost lawsuits, and created storage problems.