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Primavera Chemistry A Questions with Solutions 2024
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Primavera Chemistry A
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Primavera Chemistry AWhy was Thomson's model referred to as the plum-pudding model? - answer
Thomson’s model was referred to as the plum-pudding model because its concept
resembles the dessert plum pudding, which has raisins randomly scattered throughout
pudding. Similarly, the plum-pudding model presents the idea that atoms have
negatively charged electrons randomly placed throughout the positively charged atom.
How did Rutherford’s gold foil experiment disprove the plum-pudding model of the
atom? - answerthe gold foil experiment showed that atoms were made of mostly space
and that their positive charge was concentrated in a very small region of the atom. This
is because more positively charged alpha particles were deflected at larger angles than
Rutherford has predicted. This disproved the plum-pudding model, which described the
atoms positive charges as spread out.
order the information about the atom according to when that information was
discovered, from earliest to latest. Then, match each piece of information to the correct
individual associated with it - answerAtoms are invisible- Democritus
Atoms' masses are unique for each element- Dalton
Atoms have negatively charged subatomic particles called electrons- J. J. Thomson.
Atoms have electrons orbiting around the nucleus-Rutherford
what is an atom - answerbasic building block of matter
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