Term
|
Definition
|
|
Term
|
Definition
|
|
Term
|
Definition
|
|
Term
|
Definition
| the closer you are to the "true" value the more accurate is your result. |
|
|
Term
|
Definition
| the smaller spread of values the more precise your results are. |
|
|
Term
|
Definition
| summation of all numbers divided by the total amount of numbers. |
|
|
Term
|
Definition
| flaw in tools or instruments |
|
|
Term
|
Definition
| occure equally in each direction |
|
|
Term
|
Definition
| didn't read the out come correctly, lost stuff, sloppy. |
|
|
Term
|
Definition
| smallest particle of an element |
|
|
Term
|
Definition
| have a similar properties of metals and nonmetals, metal want to react with non metals |
|
|
Term
|
Definition
Do not depend on quantity or amount.
EX. Density |
|
|
Term
|
Definition
|
|
Term
|
Definition
| is the number of protons and neutrons. |
|
|
Term
|
Definition
| atoms of the same element but different mass numbers. Electrons and protons are the same but different number of neutrons. |
|
|
Term
|
Definition
| a convenient unit of mass; 1/12th the mass of a 12/6C atom |
|
|
Term
|
Definition
| one mole is the number of atoms in 12g of 12/6C |
|
|
Term
|
Definition
| the mass of 1 mole of substance; equal to the molecular or formula mass of the substance in grams. |
|
|
Term
|
Definition
| the weighted average mass of an element's atoms |
|
|
Term
|
Definition
|
|
Term
|
Definition
|
|
Term
|
Definition
|
|
Term
|
Definition
(weight of an atom in 1 mol of compound)
______________________________________
(total weight of 1 mol of compound) |
|
|
Term
|
Definition
(weight of an atom in 1 mol of compound)
______________________________________
(total weight of 1 mol of compound) |
|
|
Term
|
Definition
(weight of an atom in 1 mol of compound)
______________________________________
(total weight of 1 mol of compound) |
|
|
Term
|
Definition
| a formula that gives the rations of atoms in a compound |
|
|
Term
|
Definition
| a formula that tells the identity and numbers of atoms in amolecule |
|
|
Term
|
Definition
| a common unit of concentration; the number of moles of solute per liter of solution. Mols/L |
|
|
Term
|
Definition
| characteristics that do not involve a change in chemical makeup. |
|
|
Term
|
Definition
| characteristics that do involve a change in chemical makeup |
|
|
Term
|
Definition
| shiny most solid at room temp. conduct head and electricity. malleable |
|
|
Term
|
Definition
| not shiny, brittle, brightly colored, poor conductors of heat and electricity |
|
|
Term
|
Definition
| properties are between metal and non metal. MOst are silvery, solid at room temp burttle TEND to be poor conductors of heat and electricity. |
|
|
Term
|
Definition
|
|
Term
|
Definition
| describe antyhing with physical presence, anything with mass |
|
|
Term
|
Definition
|
|
Term
|
Definition
| mass is neither created nor destryoed in chemical reactions |
|
|
Term
| Law of definite porportions |
|
Definition
| different samples of pure chemicalsubstace always constains the same proportion of elements by mass |
|
|
Term
| Law of Multiple Proportions |
|
Definition
| Elements can combine in different ways to form different substances whose mass rations are small whole-number multiples of eachother |
|
|
Term
|
Definition
| negatively charged particles in all substances |
|
|
Term
|
Definition
| the visible glow emitted when an electric potential is applied between two electrodes in an evacuated chamber. |
|
|
Term
|
Definition
| concentrated mass in a tiny central core |
|
|
Term
|
Definition
| positively charged particle in nucleus with a mass of 1.672622 x 10 -24 g |
|
|
Term
|
Definition
| almost identical mass to protons but with not charge |
|
|
Term
|
Definition
| a type of emission previously observed to be given off by a number of naturally occurring radioactive elements. |
|
|
Term
|
Definition
| is a pure substance that is formed when atoms of two or more elements comvine and create a new material with properties completely unlike those of its constituent elements. |
|
|
Term
|
Definition
| transformation of one substance to another |
|
|
Term
|
Definition
| lists the symbols of the individual constituent elements and indicates the number of atoms of each element with a subscript |
|
|
Term
|
Definition
| a blend of two or more subsances added together in some random proportion without chemically changing the individual substances themselves. |
|
|
Term
|
Definition
| are those in which mixing is not uniform and which therefore have regions of different composition |
|
|
Term
|
Definition
| are thos in which the mixing is uniform and has a constant composition |
|
|
Term
|
Definition
| electrons forming connections between atoms together in compounds |
|
|
Term
|
Definition
| most common: result when 2 atoms share electrons |
|
|
