integrated science unit 4 2021
Flashcard
•
Chemistry, Science
•
9th Grade
•
Practice Problem
•
Hard
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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
What happens when an atom has more neutrons than another atom?
Back
It becomes an isotope and has more mass.
3.
FLASHCARD QUESTION
Front
What distinguishes Neon-20 from Neon-22?
Back
They have different numbers of neutrons.
4.
FLASHCARD QUESTION
Front
What is the mass number of an atom?
Back
The mass number is the sum of the number of protons and the number of neutrons in the nucleus of an atom.
5.
FLASHCARD QUESTION
Front
Which row of the Periodic Table does an element with atomic number 10 belong to?
Back
Row 2.
6.
FLASHCARD QUESTION
Front
What are protons?
Back
Protons are positively charged particles found in the nucleus of an atom.
7.
FLASHCARD QUESTION
Front
What are neutrons?
Back
Neutrons are neutral particles found in the nucleus of an atom.
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