... as we exchange carbon dioxide for the oxygen that our environment gives us. - 3 - **Five concepts** 1. The first concept that I chose is aqueous solutions. When we say something is soluble, or dissociates, in water, it means that it breaks up into ions (in other words, it dissolves) to a significant degree. It does this because water is a bent molecule and, although it's neutral, is ... a little negative (partially negative) at oxygen and a little positive (partially positive) at hydrogen. Most physiological reactions are aqueous because the only way they can occur is via water. When .....

• Word Count: 2530
• Approx Pages: 10
• Grade Level: High School