Flashcards
suiside
Flashcards do conjunto (35)
- 1isotope defan isotope is an element has the same number of protons but a different number of neutrons. E.g carbon 14, carbon 12, carbon 13
- 2which was is periodacross
- 3which way is groupdown
- 4whats the difference between atomic mass and relative atomic massatomic mass is the mass of a simple atom of its protons neutron and electrons measured in AMU. whereas relative atomic mass is the average of all isotopes in the element.
- 5why are most elements a decibel and not a whole number?most elements are a decibel because it takes the average of the relative abundances of the elements isotopes.
- 6why are some elements bigger than others (atomic radii) even though they have more particles?the more protons an element has on a single shell the more electromagnetic pull it will have towards the nucleus from the protons. Therefore, creating a smaller atomic radii.
- 7alpha decay4/2HE
- 8Beta decay0/-1e
- 9gamma decay0/0
- 10How to store alpha decay radiativein a cardboard box
- 11Penetration of alpha radiationlow penetration. Can be stopped by a hand
- 12Penetration of beta radiatonmedium penetration can be stopped by aluminum sheet
- 13Penetration of gamma radiationhigh penetration. can be stopped by several cm of lead
- 14how to figure out actual count of half life graphcorrected+ background rate
- 15acceleration from a velocity time graph?rise over run.
- 16displacement from a velocity time grapharea
- 17Newton first lawFnet = 0 A=0
- 18newton second lawf=ma
- 19Newton third lawFab = -Fba
- 20ionic?metal and non metal +-
- 21covalentnon metal and non metal--
- 22metallicmetal and metal++
- 23what are delocalized electrons?delocalized electrons are electrons that do not belong to anyone. They can move freely around the lattice, which in turn helps carry electrical charge.
- 24why are metal ductile?Metals are ductile because since their lattice is made up of positive ions, when they move around it doesn't affect the structure at all.
- 25whats an iona charged particle. The little thing on the top of element -+
- 26how to find molar massfind amu for each element
plus them together
then you have your gmol-1 - 27"how many mole in xgrams of substance?"n=m/M
n = grams/gmol-1 - 28what does n=m/M mean?n= mole
m=mass in grams
M= molar mass - 29adavagaro number6.022x20^23
- 30how to find percentage composition by masspart of what u wanna find/whole mass
amu/mr
then times by 10 to make % - 31to find mass?mole x gmol
m = n x M - 32find molecule?find mole then times by 6.022 x 10^23
- 33mole = moleculemole is just a smaller version of saying molecule. m
- 34when given e.g 7.022 x 10^34 how do we turn that into a moledivide by 6.022 x 10^23 to get mol
- 35how to work out empirical formula?mass %
mole divide by amu
ratio
Informações
- Descrição
- FlashCards sobre suiside, criado por Millie Kaniaros em 22-06-2024.
- Criado por
- Millie Kaniaros
- Visualizações
- 0
- Avaliação