Chemistry 1

Quantitative description that has a unit and number.

u 10^-6

m 10^-3

c 10^-2

k 10^3

M 10^6

amount of matter in an object

anything that occupies space

Earth its the measure of the force of gravitational attraction between the object and Earth

c-0-100

32 and 212

0 K lowest point

understand core concepts;simplified reality

All matter is composed of particles and all particles are in motion (varying speeds)

Freedom of motion of their particles and how strongly the particles attract

constant shape and volume, always moving direction and velocity vary

Constant volume, variable shape, faster than solid

Variable shape and volume, large avg. distance between particles little attraction

114+ building block of matter, cannot be chemically converted into simplar substance

Shiny, metallic, conduct heat well and electric currents into solid form

Gold Au can be hammered into sheets without breaking

Liquid

H, O, N, F, Ci

Neuron= 0 charge Proton= +1 p+ Electron= -1 charge

a=mass number which is on the bottom in periodic table and is protons + neutrons; Z is Atomic #,can vary & is # of protons

No=Mixture Yes-can it be with a single symbol Yes- Element H2 no=compound H20

Link between 2 atoms due to the sharing of two electrons 2 nonmetallic elements

Electrons share equally there is an even distribution of the - charge for the electrons in the bond no partial charges of atom

charged particles due to a loss or gain of electrons

particles lose 1 or more electrons leaving them with a positive overall charge

particles gain one or more electrons leaving them with a negative overall charge

atoms with same atomic # but different mass #, atoms with same # of protons & electrons in uncharged atom but different # of neutrons,

atoms of the same element with different masses