I made a 3-D model of a water molecule because water plays a critical part in our every-day lives. Water is used in many household actions, such as washing our hands or cleaning the dishes. We use a lot of water every day, but there is not enough clean, drinkable water in the world for everyone. Water is made from 2 hydrogen atoms and 1 oxygen atom. Water molecules are polar, which means it has an uneven distribution of electron density. If someone understood a water molecule well enough, they may be able to solve the problem of not enough clean water in the world.