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36 Cards in this Set
- Front
- Back
define acids
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substances that have a pH below 7.0, taste sour, and turn litmus paper from blue to red.
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define alkalis
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also known as bases; compounds that react with react with acids to form salts; have a pH above 7.0, taste bitter and turn litmus paper from red to blue.
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chemical properties
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Those characteristics that can only be determined by a chemical reaction and a chemical change in the identity of the substance.
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gases
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matter without a definite shape or size. no fixed volume or shape; takes the shape of its container.
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liquids
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matter that had volume, no definite shape and it will take the shape of the container, such as water.
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oil-in-water
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oil droplets dispersed in a water with the sod of an emulsifying agent.
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physical change
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change in the form or physical properties of a substance without a chemical reaction or the formation of a new substance.
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physical mixtures
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combination of two or more substances united physically, not chemically, without a fixed composition and in any proportions.
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physical properties
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characteristics that can be determined without a chemical reaction and that do not cause a chemical change in the identity of the substance.
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solutions
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a uniform mixture of two or more mutually miscible substances.
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surfactants
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acronym for surface active agent; reduce surface tension between the skin and the product to increase product spreadability; allow oil and water to mix, or emulsify.
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suspensions
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unstable mixtures of two or more immiscible substances
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water
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most abundant of all substances, comprising about 75 percent of the Earth's surface and about 65 prevent of the human body.
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water-in-oil
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droplets of water dispersed in an oil.
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chemistry
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the science that deals with the composition, structure, and properties of matter and how matter changes under different conditions.
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weekday are the two branches of chemistry
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organic and inorganic
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Are gasoline, plastics and synthetic fabrics organic or inorganic
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organic
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Blank compounds are flammable and will burn
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organic
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inorganic doesn't contain carbon but may contain the element
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hydrogen.
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Blank types of materials will not burn
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inorganic
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element
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simplest form of chemical matter. it cannot be broken down into a simpler substance without a loss of identity.
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what element does O,C, H,N, and S stand
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O for oxygen, C for carbon, H for hydrogen, N for nitrogen, and S for sulfer.
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the atoms of each element
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are different in stricture from the atoms of all other elements.
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molecules
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are formed by joining two or more atoms chemically.
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another name for compound molecules
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compounds
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compound molecules or compounds
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Are chemical combination of two or more atoms of different elements that are united chemically.
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chemical compounds
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combination of two or more atoms of different elements united chemically with a fixed chemical composition, definite proportions, and distinct properties.
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physical mixtures
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combination of two or more substances that are united physically, in Amy proportion with combined properties.
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air
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gaseous mixture that makes up the Earth's atmosphere. it is odorless, colorless, asks generally consists of of 1 part oxygen and 4 pays nitrogen
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ion
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am atom or molecule that carries am electrical charge
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ionization
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causes an atom or molecule to split in two, creating a pair of ions with opposite electrical charges.
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anion
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ion with a negative charge
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cation
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am ion with a positive electrical charge
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natural pH of skin
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5.5 slightly acidic
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what makes up acid mantle
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the barrier on the skin produced by sebum and sweat
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what is the result of exposing the skin to extreme pH
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dryness, dehydration,inflammation,and even bacteria can grow if the product is incorrect for a given skin type.
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