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11 terms

Anatomy and Physiology : Chapter 2 Chemistry of Life Section 2

Anatomy, Physiology, Chemistry, Water, Acids, Bases, pH,
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What is the percentage of water in human body weight?
65%
Solution
A homogeneous mixture of two or more substances (a solute and a solvent).
Acid
Acompound that forms hydrogen ions (H+) in solution.
Base
A compound that forms hydroxil ions (OH-) in solution.
pH
A Scale showing the acidity or alkalinity of a solution.
pH Scale
<7- Acidic
>7- Basic
7- Neutral
What does "pH" stand for?
Potential of Hydrogen
Buffer
Compounds that stabilize the pH of a solution. They react to resist changes in pH if an acid or base is added to a solution
Salt
An ionic compound composed of a cation from a base and an anion from an acid.
Cation
Positive ion.
Anion
Negative ion.