What is the Plum-Pudding model of the atom?
Mastery Flashcard Fall 2024

Flashcard
•
Chemistry
•
10th Grade
•
Hard
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1.
FLASHCARD QUESTION
Front
Back
A model proposed by J.J. Thomson suggesting that atoms are composed of a 'pudding' of positive charge with negatively charged electrons embedded within it.
2.
FLASHCARD QUESTION
Front
What did Rutherford's gold foil experiment demonstrate?
Back
It demonstrated that atoms have a small, dense nucleus that contains most of the atom's mass, and that electrons orbit this nucleus.
3.
FLASHCARD QUESTION
Front
What is the electron configuration for Magnesium?
Back
1s² 2s² 2p⁶ 3s².
4.
FLASHCARD QUESTION
Front
What happens to an atom if a proton is added or removed?
Back
It becomes a different element.
5.
FLASHCARD QUESTION
Front
What is the name of the experiment that led to the discovery of the electron?
Back
Cathode Ray Tube (CRT) Experiment.
6.
FLASHCARD QUESTION
Front
How many moles are in 20 grams of Calcium (Ca)?
Back
0.50 mol.
7.
FLASHCARD QUESTION
Front
What is the significance of the atomic number?
Back
The atomic number defines the number of protons in an atom and determines the element's identity.
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