Science CT2 Flashcards
What Does RAM stand for (in science)
relative atomic mass
definition of ram
relative atomic mass takes into account of all the isotopes of that element
what is the product of ram (like the type of mean)
WEIGHTED mean.
how calulate RAM
abundance of isotope 1 X (times) mass of isotope, divided by 100. Do this for as many isotopes there are.
in the modern PT the elements are aranged in order of?
atomic number
how are e- arranged
in fixed energy levels called electron shells.
electrons must fill the?
first shell before they csn move to the next.
in compound names, the:?
metal comes first, then the non metal.
(compound names) ide=
no oxygen
(compound names) oxide=
just oxygen
(compound names) ade=
oxygen present
when solid turns into liquid what happens?
particles gain energy, break attractive forces, seperate from eachothers and move in random directions.
what happens when liquid turn to solid?
particles loose energy, they move less/stop moving and arrange themselves in fixed positions due to the attractive forces.
what happens in transition stages in heat curve? solid/liquid, liquid/gas
paricles abosrb heat energy, break free from attract forces and start to move.
Particles gain enough energy to break attractive forces and move freely.
why dont substances turn to their liquid and gas states instnatly? and dont increase in heat?
They dont increase in heat as all the atoms must be spread out/ broken attractive forces to be able to turn into a gas.
