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Water
Recently in our AP Biology coursework we have been covering the topic of water, and its universal properties in aiding to sustain life.
Here are a series of fun facts but first lets start with water on a microscopic level.
Cohesion is the attractive force between molecules of the same substance, causing them to stick together; in water, this results in the formation of droplets and contributes to the liquid's relatively high surface tension.
Adhesion is the attractive force between molecules of different substances, which allows water to stick to surfaces like glass or plant tissues, facilitating capillary action where water moves upward against gravity.
Surface Tension is the result of cohesive forces at the surface of a liquid, creating a "skin" that resists external force, enabling small objects or insects, like water striders, to float or move on the water surface without sinking.
Water is able to form polar bonds with other molecules. Through hydrogen the positively hydrogen of one water molecules forms a strong intermolecular force with the opposite negatively charged oxygen of another water molecule. Hydrogen bonding can occur only between a positively charged hydrogen of one molecule adjacent to an opposite flourine, oxygen, or nitrogen molecule (FON!)
FON Facts
Most people produce enough saliva in their lifetimes that can fill two swimming pools
80% of the brain the made up of water
The acid in our stomachs are strong enough to dissolve razorblades
Your fluid levels can drop by 2-3% of your body weight before you notice youre thirsty
20% of your fluids are gained through water-rich foods
Your body can overdose on water
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