
End of module 3 Review Packet
Flashcard
•
Chemistry
•
9th - 12th Grade
•
Practice Problem
•
Hard
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15 questions
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1.
FLASHCARD QUESTION
Front
What did Rutherford discover in his experiment?
Back
Rutherford discovered the nucleus of the atom, which is a dense positively charged center.
2.
FLASHCARD QUESTION
Front
How many neutrons are in Magnesium?
Back
Magnesium has 12 neutrons.
3.
FLASHCARD QUESTION
Front
An alpha particle is made up of?
Back
An alpha particle is made up of 2 protons and 2 neutrons.
4.
FLASHCARD QUESTION
Front
What is the average atomic mass of an element with the following isotopes: 4.35% have a mass of 49.9461 amu, 83.79% have a mass of 51.9405 amu, 9.50% have a mass of 52.9407 amu, and 2.36% have a mass of 53.9389 amu?
Back
The average atomic mass is 51.99 amu.
5.
FLASHCARD QUESTION
Front
What did Rutherford discover about atoms?
Back
Rutherford discovered that an atom is mostly empty space, but has a dense positively charged center (nucleus).
6.
FLASHCARD QUESTION
Front
What is the charge of a proton?
Back
A proton has a positive charge.
7.
FLASHCARD QUESTION
Front
What is the charge of a neutron?
Back
A neutron has no charge (neutral).
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