science Flashcards
Atoms means..
uncuttable, smallest possible pieces
atomic theory grew due to…
a series developed from epirmental evidence
Dalton infersthat atoms…
had certain charateristics
every compound is composed of…
atoms of different elements in a specific ratio
Who found that atoms contain negatively charged particles?
J.J. Thhomson
What has no electrical charge?
atoms
If Thomson was correct the charged particles would…
pass through foil in a straight line
Like charges..
Repel eachother
Bohrs model shows that electrons…
only had specific amount of energy leading to them to certain orbits (like an onion)
An electroms movement is related to its…
energy level/specific amount of energy
Who discovered neutrons?
James Chadwick
Neutrons almost has the same mass as a…
proton
Modern atomic model describes that an atoms…
is mostly empty space
True or false: In an atom, protons # doesn’t = electrons #
False, protons#= electrons #
Charges balance out which makes…
the atom neutral