102.12-102.13 pH and hair care product knowledge

ph balance

4.5-5.5

on the ph scale what is 0-6

acidic

on a ph scale what is 8-14

alkaline

alkali

decrease concentration of hydrogen ions when placed in water bc it accepts or combines with positive hydrogen ions

powders

equal mixtures of inorganic and organic substances that do not dissolve is water

solution is neutral when it has

equal number of positive and negative ions

emulsions

formed when 2 or more immiscible substances are united by binder or gum like substance

acid

increased concentration of hydrogen ions when placed in water because it donates, or releases positive hydrogen ions

solutions

mixture of 2 or more kinds of evenly dispersed molecules

suspensions

mixtures of 2 or more molecules that separate when left standing and need to be shaken before use

soaps

mixtures of fats and oils converted to fatty acids by heat and then purified

ointments

mixtures of organic substances and a medicinal agent usually found in semi solid form

solution is alkaline if it has

more negative hydrogen ions

solution is acidic if it has

more positive hydrogen ions than negative hydroxide ions

ph meter

most accurate, electrode placed in substance, can measure ph of acid mantel

on a ph scale what is 7

neutral

pure water

ph value of pure water is neutral

PH

potential hydrogen; numerical measurement that indicates the acidity or alkalinity of water based substance

solute

substance that dissolves into a liquid and form a solution

solvent

substance that is able to dissolve into another substance

indicator liquid

uses color changes, blue paper turns red in acid, red paper turns blue in alkaline