Flashcards in Unit 2: Water Properties Part 2 Deck (28):
Water is called the ___________ _________.
Liquid that is doing the dissolving of another substance
Substance being dissolved in the solvent
Substance possessing equal distribution of material. (Kool-aid is a good example.)
__________ ________ of _______ make solvent, solute, and solutions possible.
hydrogen bonds, water
Water surrounding a molecule. Substance is dissolved and “disappears”.
Oils, grease, and fat are ___-_____ and therefore water can’t grab and dissolve. (Need salt to make a molecular bridge to dissolve… most dishwashing liquids are just saltwater with coloring.)
Water cannot attach to the substance because the substance is non-polar.
The substance “hates” water’s polarity.
means fear of
means love of
Water can attach to the substance because the substance is polar.
The substance “loves” water’s polarity.
Refers to water breaking apart into H+ (Proton) and an OH- (Hydroxide Ion).
a substance that gives away H+. (Measured on a pH scale.)
the ph scale goes from ___ to ___
What is neutral on the ph scale?
7 – Substance is a ____
a substance that gives away OH-. (Measured on a pOH scale.)
On the pOH scale: < 7 – substance is a _____; > 7 – substance is an _____
A substance that can resist changes in pH or pOH.
It can take on or gives off a H+ or OH- to maintain the pH or pOH concentration
_______ helps keeps blood at a pH of 7.4 ideally
Example of buffer
Bicarbonate in human blood HCO₃¯
Why is bicarbonate needed?
because of the food, drink, air or other substances we put into our bodies
HCO3- can take on H+ from the blood to become H2CO3 (_______ ______) to raise blood pH. The H2CO3 then travels to the lungs where it is converted to H2O (water) and CO2.
Refers to Rain, Snow, Sleet, Ice, or Fog with a low pH.
Water falling in the environment that has a pH of less than 5.6.