Atomic & Mass Number

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•
Chemistry
•
9th - 12th Grade
•
Hard
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15 questions
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1.
FLASHCARD QUESTION
Front
What is the atomic number?
Back
The atomic number is the number of protons in the nucleus of an atom.
2.
FLASHCARD QUESTION
Front
If an atom has 10 electrons, how many protons does it have?
Back
10 protons.
3.
FLASHCARD QUESTION
Front
What is the mass number defined as?
Back
The mass number is the total number of protons and neutrons in an atom's nucleus.
4.
FLASHCARD QUESTION
Front
What are isotopes?
Back
Isotopes are atoms of the same element that have different numbers of neutrons.
5.
FLASHCARD QUESTION
Front
What is the atomic number of Nickel?
Back
28.
6.
FLASHCARD QUESTION
Front
How do you calculate the mass number of an atom?
Back
Mass number = Number of protons + Number of neutrons.
7.
FLASHCARD QUESTION
Front
What is the relationship between protons and electrons in a neutral atom?
Back
In a neutral atom, the number of protons equals the number of electrons.
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