Term
|
Definition
|
|
Term
|
Definition
|
|
Term
|
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
|
Definition
| how close measured value is to acccepted value |
|
|
Term
|
Definition
| how close a series of measurements are to eachother |
|
|
Term
|
Definition
| expiremental value - accepted value |
|
|
Term
|
Definition
|
|
Term
|
Definition
|
|
Term
|
Definition
| pionts on line graph are connected |
|
|
Term
|
Definition
| extend line beyond graph to estimate future outcomes |
|
|
Term
|
Definition
| dependant of the amount of substances present (mass,length...other measurements) |
|
|
Term
|
Definition
| independnt of the amount of substances present (density) |
|
|
Term
|
Definition
| error/ accepted value x 100 |
|
|
Term
|
Definition
| alters a substance w/o changing its composition [melting boiling pnt] |
|
|
Term
|
Definition
1 or more substances changing into a new substance w/ diff composition
fermentation, decompose,corrode, tarnish, burn |
|
|
Term
|
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
|
Definition
| combination of substances that doesnt change the individual substances chemically |
|
|
Term
|
Definition
| Homogeneos- mixed all the way through, constant composition (aka solutions-solid, liquid or gas) |
|
|
Term
|
Definition
| homogeneous metal+metal or metal + nonmetal where metal is larger component |
|
|
Term
|
Definition
| not blended smoothly throughout, individual parts distinct |
|
|
Term
|
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
|
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
|
Definition
| mass of element/ mass of compound x 100 |
|
|
Term
| law of multiple proportions |
|
Definition
| a group of chemicals can make many diff compounds |
|
|
