Which of these is an example of an organic substance?
FERTILIZER, PLASTIC, & GASOLINE (ALL OF THE ABOVE)
The smallest particle of an element that still retains the properties of that element is called a(n):
A ________ is a change in the state of a substance, without the formation of a new substance.
The skin's protective barrier against certain forms of bacteria an microorganisms is called the:
The two types of chemical reactions that are important to estheticians are:
_________ substances make up the physical mixtures of solutions, suspensions, and emulsions.
TWO OR MORE
An unstable mixture of two or more ________ substances united with the aid of an emulsifier is an emulsion.
The rapid oxidation of a substance, accompanied by the production of heat and light is called:
ACID-ALKALI NEUTRALIZATION REACTIONS
When an acid is mixed with an alkali, also called a base, in equal proportions to neutralize each other and form water (H20) and a salt.
The gaseous mixture that makes up the earth's atmosphere. It is odorless, colorless, and generally consists of about 1 part oxygen and 4 parts nitrogen by volume.
Also called bases; have a pH above 7.0, taste bitter, and turn litmus paper from red to blue.
Free radical scavengers, vitamins and ingredients. Antioxidants also inhibit oxidation. They are used both to help the condition of the skin and to stop the oxidation that causes products to turn rancid and spoil.
Change in the chemical composition of a substance, in which a new substance or substances are formed that have properties different from the original.
Those characteristics that can be determined only with a chemical reaction and that cause a chemical change in the identity of the substance.
Science that deals with the composition, structures, and properties of matter and with how matter changes under different conditions.
The simplest form of matter; cannot be broken down into a simpler substance without a loss of identity.
An unstable mixture of two or more immiscible substances united with the aid of an emulsifier.
"Super" oxidizers that cause an oxidation reaction and produce a new free radical in the process; are created by highly reactive atoms or molecules (often oxygen) having an unpaired number of electrons. Free radicals are unstable and can damage DNA, causing inflammation and disease in the body.
Chemical compound of hydrogen and oxygen; a colorless liquid with a characteristic odor and slightly acid taste.
OXIDATION REDUCTION (REDOX) REACTIONS
One of the most common types of chemical reactions; prevalent in all areas of chemistry. When oxygen is added to a substance, the substance is oxidized; for example rust forms with oxygen is added to iron.
Change in the form of physical properties of a substance without a chemical reaction or the formation of a new substance.
Combination of two or more substances united physically, not chemically, without a fixed composition and in any proportions.
Characteristics that can be determined without a chemical reaction and that do not cause a chemical change in the identity of a substance.
Acronym for reduction oxidation; chemical reaction in which the oxidizing agent is reduced and the reducing agent is oxidized.
Surface active agents that reduce surface tension between the skin and the product to increase product spreadability; also allow oil and water to mix; detergents and emulsifiers.
Most abundant of all substances, comprising about 75 percent of the earth's surface and about 65 percent of the human body.