Traditional IRA contributions can be tax deductible or partially tax deductible based on MAGI. In 2014, an individual with a MAGI of up to $70,000 is eligible for at least partial deductibility. There are no income limits on who can contribute to a traditional IRA.
When the water heater breaks / leaks whatever the pressure tank is going to loose pressure telling the pump to come on and the pump will run continually as it can not build pressure to shut it off.
But don't worry, you're getting there. What happens is, water has very strong intermolecular hydrogen bonds-- that is, strong bonds from molecule to molecule. When you boil water, you are breaking the bonds between the molecules. Think of the bonding like this: H O----HOH H Because hydrogen bonding is the strongest type of intermolecular bond, it takes a lot of energy to break the bonds and vaporize water. That's why water has such a high specific heat. What you are referring to is intramolecular bonds, or bonding between atoms in the molecule.