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24 Cards in this Set
- Front
- Back
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all living things contain
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carbon
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smallest particle of an element that retains properties
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atom
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whic part of an aton has a negative charge
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electron
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when two or more atoms are joined chemically it forms a
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molecule
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liquids
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have a definite size but not shape
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what is consitered a typeemical properties of matter
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water
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rusting iron and burning wood
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chemical properties
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when water turns to ice
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undergoes physical change
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the lightest element found on earth
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hydrogen
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water makes how much of the human body
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65 percent
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the relative degree of what is potential hydrogen
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acidity and alkalinity
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anything below a 7 is what
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acidic
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a ph of 10 is how much more alkaline than 7
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1000 times
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the skins protective barrier of certain forms of bacteria is called
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acid mantel
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the two types of chemical reactionsthat are important to estheticians are
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acid-alkali oxidation-reduction
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how do antioxidants prevent oxidation from occuring
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neutralize free radicals
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how many substances make up the physical mixtures of solutions and suspensions
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two or more
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an unstable mixture of two or more what substances
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immiscible
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suspensions are made up of what two or more substances
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uniform mixtures
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which is an example of a suspension
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aerosol hair spray
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which seperates over time
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suspensions and emoltions
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one end of the sufactent molecule is hydrophilic and the other is
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lipophillic
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o/w emoltions are often
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milky free flowing
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the rapid oxidation of a substance accompanied by the production of heat and light is called
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combustion
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