chem 3/1.2020 Flashcards
the difference between a gas and a liquid?
liquids are touching each other however, moving freely.
gas are fare apart quickly moving.
a …. has a definite shape
solid
chromatography
used to separate coloured substances that are soluble
RF
distance moved by substances/distance moved by solvent
always measured RF in what?
MM
which line is the solvent line top or bottom
top
what three thing are in an atom
protons, neutron and electron
which of the three (protons, neutron and electron) is not in the inner shell.
electron
in the table the top number is
relative atomic mass
in the table the bottom number is
proton number
how do you find the number of Electron
the same as the protons (the bottom number)
how do you find the number of neutron
take the top and bottom numbers away from each other.
how many electrons are on the first shell
two
how many electrons can you have on the 2nd and on wood shells
eight
what is the pattern in the way the electron are placed
in a cross pattern
