7.2A Flashcards
What does PH stand for
Potential hydrogen
What does pH measure
Whether a substance is acidic, neutral or alkaline
What does a solution need to have in order to be acidic or alkaline
Water
What does it mean for something to be acidic
There are more positive hydrogen ions the negative ions
What does it mean for something to be alkaline
There are more negative hydroxide ions.
This is sometimes referred to as base
What is the symbol for hydrogen ions
H+
What is the symbol for hydroxide ions
OH-
In the PH measurement scale which numbers are acidic and which numbers are alkaline
Numbers below seven or acidic
Numbers above seven or alkaline
Seven is neutral
What is the difference between pH balanced an acid balanced
PH balanced means that it is balanced at a certain level but not necessarily 4.5 to 5.5
Acid balance is when the pH is balanced with in the acid range of 4.5 to 5.5
What is pure distilled waters pH
7
What makes water hard water
Hard water may contain salt such as calcium and magnesium
What makes water soft water
Soft water contains very few minerals
What are the nine types of product categories
Solution Suspension Stick Aerosol Emulsion Gel Mixture Ointment Powder
What is a mixture
When two or more compounds are blended together physically rather than chemically
What is a solution
A mixture of two or more chemicals in which each component is evenly disbursed into the mixture to form a complete and homogenous dispersion
What is a solvent
The liquid part of a solution
What is a solute
The solid or dissolved part of a solution
What are the only substances not soluble in water
Organic
What are the two types of solvents
Miscible solvents and immiscible solvents
Miscible solvents
Mix easily together
What are immiscible solvents
Solvents that don’t mix easily together
Example oil and water
What is a suspension
Even dispersion of a solid substance in a liquid base
What is gel
Product that has been formulated with a thickening agent to increase its viscosity
What is powder
Finally ground solid mixed evenly with additional ingredients