subatomic particles with no charge
neutrons
a colorless liquid or white crystals with a strong unpleasant odor that is used in permanent waving solutions
Thioglycolic acid
the separation of an atom or molecule into positive and negative ions
ionization
characteristics that can be determined only by a chemical reaction and a chemical change in the substance
Chemical properties
rapid oxidation of a substance accompanied by the production of heat and light
combustion
any substance that occupies space and has mass
matter
sweet, colorless, oily substance used as a solvent and as a moisturizer in skin and body creams
glycerin
a chemical reaction in which the oxidizing agent is reduced and the reducing agent is oxidized
redox
characteristics that can be determined without a chemical reaction and that do not cause a chemical change in the substance
Physical properties
material that is capable of igniting and burning
combustible
a chemical combination of two or more atoms in definite proportions
molecule
lye; a very strong alkali used in chemical products and cleaners
sodium hydroxide
chemical reaction that releases a significant amount of heat
exothermic
having an affinity for or an attraction to fat and oils
lipophilic
chemical reaction that releases a significant amount of heat
exothermic
the smallest chemical components of an element
atoms
colorless gas with a pungent odor that is composed of hydrogen and nitrogen
ammonia
when acids are mixed with alkalis in equal proportions, balancing the total pH and forming water and a salt
Acid–alkali neutralization
capable of combining with or attracting water
hydrophilic
alcohols that evaporate easily
volatile alcohols
subatomic particles with a positive charge
protons
acids derived from plants that are often used to exfoliate the skin
alpha hydroxy acids
chemical reaction that requires the absorption of energy or heat from an external source for the reaction to occur
endothermic
liquids that are not capable of being mixed together to form stable solutions
immiscible
material that is easier to ignite than combustible material
flammable