
Atomic Concepts #1
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Chemistry
9th Grade
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20 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Niels Bohr
1. Planetary Model
2. Solar System Model
3. Electron-Shell Model
4. Atomic Orbital Model
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Average Atomic Mass
The total mass of an element's isotopes
The weighted average of all naturally occurring isotopes of an element
The mass of the most abundant isotope
The average mass of an element's atoms in a molecule
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Most Abundant Isotope
Isotope that makes up the largest percentage of atoms of an element
Isotope with the highest atomic number
Isotope that is least stable
Isotope that has the lowest mass number
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Atomic Number
Identifies the element
Number of neutrons in an atom
Total mass of the atom
Number of electrons in an atom
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
u
atomic mass unit
unit of energy
unified atomic number
universal constant
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is Ernest Rutherford known for?
Gold-Foil Experiment
Plum Pudding Model
Quantum Theory
Periodic Table of Elements
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Neutron
Located inside the nucleus
Has a positive charge
Located outside the nucleus
Has a negative charge
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