Flashcards
atomic structure
Cards in this deck (11)
- 1the charge of a proton is+1
- 2what is the charge of a neutron0-it has no charge
- 3what is the charge of a electron-1
- 4JJ thompson said atoms where like what type of pudding?plum pudding
- 5what is the plum pudding?JJ thompson thought that atom where a solid positive mass and negative plums scattered around
- 6describe the scattering experimenthe fired positive alpha particles at gold foil
some particles scattered back but the majority went through.
as the alpha particle hit the positive part of the atom it repelled. he then concluded that the nucleus must be small because the majority went through - 7what is a isotope?atom with the same number of protons and electrons but different number of neutrons
e.g. carbon can be a isotope - 8list 2 properties of alpha radiationlarger than beta
relative atomic mass is 4
+2 charge
made from 2 protons and 2 neutrons - 9list 2 properties of beta radiationsmallest particle
relative atomic mass=1/1860 (v.small)
made up of 1 electron (neutron changes to a proton)
-1 charge - 10list 2 properties of gamma radiationhigh energy
electromagnetic wave
relative atomic mass = 0
0 charge (neutral) - 11radiation is detected using ageigermulller tube
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- Flashcards on atomic structure, created by 240799ca on 01/12/2014.
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- 240799ca
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