The science that deals with the composition, structure, and properties of matter and with how matter changes under different conditions.
The simplest form of matter and cannot be broken down into a simpler substance without loss of identity.
Chemical combinations of two or more atoms of different elements that are chemically united.
Change in the form of physical properties of a substance without a chemical reaction or formation of a new substance.
Those characteristics that can be determined without a chemical reaction and that do not cause a chemical change in the identity of the substance.
Those 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.
Change in the chemical composition of a substance, in which a new substance or substances are formed having properties different from the original.
Combination of two or more substances united physically, not chemically, without a fixed composition and in any proportion.
Colorless, gaseous mixture element, makes up about four fifths of the air in our atmosphere found chiefly in the form of ammonia and nitrates.
Gaseous mixture that makes up the earth's atmosphere, one part oxygen and four parts ntirogen by volume.
The most abundant of all substances, comprising about 75 percent of the earth's surface and about 65 percent of the human body.
A chemical compound of hydrogen and oxygen, colorless liquid with a characteristic odor and a slightly acid taste.
Potential hydrogen of a substance is its relative degree of acidity or alkalinity and is measured on a scale of 0 to 14.
A protective barrier against certain forms of bacteria and microorganisms, may be a factor in the natural skin-shediing and renewal process.
Acid-Alkali Neutralization Reactions
When an acid is mixed with an akali, also called a base, in equal proportions to neutralize each other and form water (h2o) and a salt.
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 when oxygen is added to iron;
Acronym for reduction oxidation; chemical reaction in which the oxidizing agent is reduced and the reducing agent is oxidized.
Used to stabilize skin care products by preventing or retarding the oxidation that would otherwise cause a product to turn rancid and spoil.
Super oxidizers that cause an oxidation reaction and produce a new free radical in the process.
Suspensions of an unstable mixture of two or more immiscible substances united with the aid of an emulsifier.