Details Title: 1 FINAL EXM SEMESTER 1 Description: Chapters 1-9 and 21 Total Flash Cards: 28 Created: 12/10/2008 14:17:32		New Users: To study from this flashcard set, or to create your own your own study flash cards, REGISTER HERE. Existing Users: CLICK HERE. Additional Chemistry Flashcards
Cards in this set: Term K= Definition C + 273 Term volume Definition masS /VOULume Term add sci notation Definition must have the same exponent ad coefficients Term mult with varying exponents [2 x 10^3] x [3 x 10^2] Definition mult coefficients and add exponente 6 x 10^5 Term divide sci not [9 x 10^8] / [3 x 10^-3] Definition divide coefs subtract exponent [3 x 10^11) Term accuracy Definition how close measured value is to acccepted value Term precision Definition how close a series of measurements are to eachother Term error Definition expiremental value - accepted value Term tolerances Definition acceptable errors Term x & y axis (ind or d) Definition x ind y dep Term continuos Definition pionts on line graph are connected Term extrapolation Definition extend line beyond graph to estimate future outcomes Term extensive properties Definition dependant of the amount of substances present (mass,length...other measurements) Term intensive properties Definition independnt of the amount of substances present (density) Term percent error Definition error/ accepted value x 100 Term physical change Definition alters a substance w/o changing its composition [melting boiling pnt] Term chem change Definition 1 or more substances changing into a new substance w/ diff composition fermentation, decompose,corrode, tarnish, burn Term phase change Definition transition of matter from one state to another (water-vapor-ice) Term law of conservation of mass Definition mass is niether created nor destroyed during a chemical reaction. it is conserved Term mixture Definition combination of substances that doesnt change the individual substances chemically Term homogeneos Definition Homogeneos- mixed all the way through, constant composition (aka solutions-solid, liquid or gas) Term alloy Definition homogeneous metal+metal or metal + nonmetal where metal is larger component Term heterogeneous Definition not blended smoothly throughout, individual parts distinct Term seperating mixtures Definition filtratin, distillation (heated untill lower boiling point substance evaporates), crystallization (dissolved substances collect into a crystall), sublimation (solid turns into vapor w/o melting), chromotography(seperates substance by how fast they are drawn across a surfac) Term electrolysis Definition platinum tube sends electric current which splits the 2 chemicals into compartments Term law of definate proportions Definition mass of a compound equals the combined mass of the elements in the compound Term percent by mass Definition mass of element/ mass of compound x 100 Term law of multiple proportions Definition a group of chemicals can make many diff compounds