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Chemistry QsI-III
FINAL
Question | Answer |
---|---|
science dealing with the molecular and atomic structure of matter and of the composition of substances | chemistry |
the study of compounds usually containing elements other than carbon | inorganic chemistry |
the study of certain carbon compound | organic chemistry |
chemistry of living things, study of compounds produced by living things | biochemistry |
chemistry of embalming | embalming chemistry |
chemistry of death | thanatochemistry |
indicates the quantity of matter present in an object | mass |
have definite shape and volume | solid |
no definite shape, but have a definite volume | liquid |
no definite shape or definite volume | gas |
a change in which no new substance is produced, although there may be a change of state, density, or both | physical change |
a change in which one or more new substances disappear and a new substance or substances are formed | chemical change |
solid to liquid | melting |
liquid to solid | freezing |
liquid to gas | boiling |
vapor to liquid | condensation |
directly from solid to gas | sublimation |
cremation, embalming, and decomposition are all ____ changes | chemical |
properties which tell us what a substance is: color, taste, solubility, density, hardness, melting point, freezing point | physical properties |
properties which tell us what a substance does: reacting or not reacting in air, with an acid, burning/not burning with a flame | chemical properties |
the building blocks of all matter, cannot be broken down by ordinary means | elements |
a substance consisting of two or more atoms combined chemically in definite proportions by mass | compound |
a combination of two or more substances not chemically united and not in definite proportions by mass | mixture |
smallest portion of an element that retains all of the properties of the element | atom |
a combination of two or more atoms | molecules |
an atom that has either lost of gained electrons in its highest energy level | ion |
a loss of electrons | oxidation |
a gain of electrons | reduction |
the substance reduced in a redox reaction | oxidizing agent |
the substance oxidized in a redox reaction | reducing agent |
homogenous mixture of two or more substances evenly distributed in each other | true solution |
pass through membranes and filter | true solution |
particle size is less than 1nm (nanometer) | true solution |
the material dissolved in a solution | solute |
the liquid material in which the solute has been dissolved | solvent |
solution-like system in which particles pass through filters but not membranes | colloid |
particle size is between 1nm and 100nm | colloid |
a mixture of a solute and solvent in which the solute particles will not pass through membranes or filters | suspension |
particle size is greater than 100nm | suspension |
compounds that yield hydrogen ions in a water solution | acids |
compounds that yield hydroxide ions in a water solution | bases |
formed by the neutralization reaction of an acid and base | salts |
the negative logarithm of the hydrogen ion concentration | pH |
acidic pH | 0-6.9 |
neutral pH | 7 |
basic (alkaline) pH | 7.1-14 |
substances that, in solution, are capable of neutralizing, within limits, both acids and bases and thereby maintaining the original or constant pH of the solution | buffer |
organic compound containing one or more hydroxyl groups | alcohol |
general formula for an alcohol | ROH |
organic compound containing one or more -CHO groups (carbonyl groups) | aldehyde |
general formula for aldehyde | RCHO |
functional group for aldehyde | carbonyl group |
a saturated hydrocarbon, only carbon-carbon single bonds | alkane |
unsaturated hydrocarbon containing at least one carbon-carbon double bond | alkene |
unsaturated hydrocarbon containing at least one carbon-carbon triple bond | alkyne |
pertaining to any member of one of the two major groups of organic compounds, those having either straight or branched chain structures | aliphatic |
the existence of an element in two or more distinct forms | allotropism |
an organic compound containing nitrogen | amine |
any compound formed from ammonia by replacement of one or more hydrogen atoms by organic radicals | amine |
any compound containing a resonance-stabilized ring such as benzene or toluene | aromatic |
a compound of hydrogen, carbon, and oxygen that is an aldehyde or ketone derivative of a polyhydroxy alcohol | carbohydrate |
an organic compound containing two aldehyde (-CHO) radicals | dialdehyde |
a compound formed from an alcohol and organic (carboxylic) acid by removal of water | ester |
general formula for an ester | RCOOR |
organic compound formed by the dehydration between two alchols | ether |
general formula for an ether | ROR |
formaldehyde gas dissolved in water | formalin |
formalin is ____% by weight and ___% by volume | 37% by weight, 40% by volume |
a chemical reaction in which a substance is broken down by water | hydrolysis |
a class of organic compounds containing the carbonyl group C=O whose carbon atom is joined to two other carbon atoms-the C=O group occurs within the carbon chain | ketone |
general formula for ketone | RCOR |
branch of chemistry that deals with certain carbon-containing compounds | organic chemistry |
a large molecule made by linking together a number of monomers, or basic chemical units | polymer |
surface-active agents that are usually used for disinfection of skin, oral, and nasal cavities and instruments | quaternary ammonium compounds |
a hydrocarbon which contains only single bonds | saturated hydrocarbon |
organic compound that has one or more double or triple bonds between two carbon atoms | unsaturated hydrocarbon |
phenol is an | aromatic |
two other synonyms for phenol | carbolic acid, hydroxybenzene |
two other names for methanol | wood alcohol, methyl alcohol |
two other names for ethanol | grain alcohol, ethyl alcohol |
another name for formaldehyde | methanal |
methyl salicylate is also called | oil of wintergreen |
benzyl alkonium chloride is a | QUAT |
three polysaccharides | starch, glycogen, cellulose |
formed by the oxidation of an aldehyde | carboxylic acids |
produced by the reaction of an organic acid with an alcohol | ester |
formed during the dehydration of an alcohol where sulfuric acid is the dehydrating agent | ether |
derived from ammonia | amines |
formed by the action of tertiary amines with organic halides | quaternary ammonium salts |