1 / 5

Water and Solutions

Water and Solutions. Water. Its properties enable life to exist! Heats up slowly and cools slowly Prevents organisms from changing temperature rapidly Allows a lot of heat to be taken away from the body during sweating Moderates temperatures under water and near large lakes and oceans

olin
Download Presentation

Water and Solutions

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript


  1. Water and Solutions

  2. Water • Its properties enable life to exist! • Heats up slowly and cools slowly • Prevents organisms from changing temperature rapidly • Allows a lot of heat to be taken away from the body during sweating • Moderates temperatures under water and near large lakes and oceans • Capillary Action – allows water to reach the tops of trees • Adhesion – water sticks to a polar surface • Cohesion – water molecules stick to each other

  3. Mixtures • Homogeneous – same throughout • Solutions – particles are evenly distributed in the solvent • No Tyndall Effect • Heterogeneous – different throughout • Colloid – particles do not settle out – Shows the Tyndall effect • Suspensions – particles are a little larger, and will settle out

  4. Bases pH above 7 Higher concentration of OH- (hydroxide ions) The further away from 7 the more basic Also called alkaline Bitter pH – A measure of the hydrogen ion concentration Acids • pH below 7 • Higher concentration of H3O+ (hydronium ions) • The further away from 7 the more acidic • Sour * Changing the pH by 1 means that the concentration of H+ has increased or decreased by 10x

  5. Buffer • Reduces changes in pH • Important in the body, because changes in pH can affect how reactions happen • CO2 mixes with H2O to make carbonic acid (in a process similar ti the one that forms acid rain). Without a buffer your blood would become acidic.

More Related