Flashcards

Untitled

bpmulley Chemistry (Yr 9) English 5 cards

Cards in this deck (5)

1Democritus400BC
All substances consisted if indestructible particles called atoms
2Dalton1808
all matter consisted of atoms
atom could not be divided
atoms of the same element are alike
atoms are combined in simple two number ratios
3Rutherford1911
mostly empty space
dense nucleus of positively charged protons and electrons orbiting nucleus
electrons will eventually lose energy and spiral in towards the nucleus
4Niels Bohr1913
electron orbits in different levels and can change depending on how much energy they have
didn't explain all known facts
5James Chadwick1932
Discovered all known facts about the atom

Description: Chemistry (Yr 9) Flashcards on Untitled, created by bpmulley on 10/05/2015.
Created by: bpmulley
Views: 0
Rating