Flashcards in Chapter 7 - Basics Of Chemistry Deck (37):
TF you will learn how to layer products
What is an example of an organic substance?
TF inorganic substances are flammable
The simplest form of chemical matter
How are elements identified?
TF Atoms of each element are different in structure from the atoms of all other elements
These have a definite size and definite shape
These have a definite size but not a definite shape
These have neither a definite size nor a definite shape
Characteristics that can be determined without a chemical reaction and that do not cause a chemical change in the identity of the substance
Characteristics that can be determined only with a chemical reaction and that cause a chemical change in the identity of the substance
A change in the form or physical properties of a substance without the formation of a new substance
Combination of two or more substances that are united physically, in any proportions with combined properties
What state of mater is liquid
The most abundant element found on earth
Airs volume consists of what?
1 part oxygen and 4 parts nitrogen
What is the most commonly used cosmetic ingredient?
What is the range of the pH scale?
What does pH stand for?
Creates a pair of ions with opposite electrical charges
Also known as bases, have a pH above 7.0
Substances with a pH below 7.0
What turns litmus paper from red to blue
A pH of 8 is how much more alkaline than a pH of 7
Chemical reaction in which the oxidizing agent is reduced and the reducing agent is oxidized
Rapid oxidation of substance, accompanied by the production of heat and light
What is true of suspensions
They are slightly miscible
Uniform mixture of two or more substances
Unstable mixture of two or more immiscible substances
TF suspensions contain smaller particles than solutions do
When properly stored how long can an emulsion be stable for?
These are used to emulsify oil and water
TF O/W emulsions are easily rinsed away with water
What is an example of an O/W emulsion
Droplets of oil dispersed in water with the aid of an emulsifying agent
Oil in water emulsion