Atomic structure, ions, isotopes
Authored by MRU GOVANDE
Chemistry
KG - University
NGSS covered
Used 113+ times
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25 questions
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1.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
The mass number of an element that has18 protons, 18 electrons, and 19 neutrons is _____.
2.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
The atomic number of an element that has 9 protons, 9 electrons, and 10 neutrons is _____.
Tags
NGSS.MS-PS1-1
3.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
If the number of electrons in an atom changes you make a(n) __________________.
4.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Carbon-12 has 98.2% abundance, carbon-13 has 1.7% abundance, and carbon-14 has 0.1% abundance. Which isotope contributes most to the average atomic mass?
5.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
How many neutrons does uranium-239 have
Tags
NGSS.HS-PS1-8
6.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Which particle contributes least to the total mass of an atom?
7.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Atomic Number: 26
Neutrons: 30
Electrons: 25
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