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- 1. Open Ended
Provide me your name; Last Name, First Name
- 2. Multiple Choice
The total number of protons and neutrons in the nucleus is also known as _______
atomic number
mass number
average atomic mass
neutrons
- 3. Multiple Choice
Which is also the same as the number of protons?
Atomic number
Mass number
Average Atomic Mass
Neutrons
- 4. Multiple Choice
Subtracting atomic mass and the atomic number gives you _______
Atomic Number
Mass Number
Average Atomic Mass
Neutrons
- 5. Multiple Choice
Comparing protons and electrons, _______have a greater mass.
protons
electrons
neither
- 6. Multiple Choice
Comparing charges of protons and electrons, ________ have a negative charge.
protons
electrons
neither
- 7. Multiple Choice
Thomson discovered that electrons had __________ mass/________ charge.
a large mass/positive charge
no mass/negative charge
a small mass/ positive charge
a small mass/ negative charge
- 8. Multiple Choice
In Rutherford's experiment, 98% of Alpha Particles went straight through the gold foil. This suggests;
the center of the atom was positively charged
the atom was mostly empty space
the atom was dense and heavy
the plum pudding model was correct
- 9. Multiple Choice
In Rutherford's experiment, ~2% of Alpha particles went through the foil but were deflected at large angles. This suggests;
the center of the atom was positively charged and tiny.
the atom was big enough to deflect only some alpha particles
the atom was dense and heavy
the plum pudding model was correct
- 10. Multiple Choice
In Rutherford's experiment, a small amount of alpha particles bounced off the gold foil. This suggests;
the center of the atom was positively charged
atom was mostly empty space
the nucleus of the atom is dense and tiny
Plum pudding model was correct.
- 11. Multiple Choice
Isotopes are atoms of the same element that have different number of _____________. This causes them to have different _________.
protons/ atomic numbers
neutrons/mass
electrons/charge
- 12. Multiple Choice
A mass spectrometer sorts Isotopes by ________. The lighter isotopes are deflected the __________.
atomic number/most
mass/most
mass/least
atomic number/least
- 13. Multiple Choice
Which one of these best represents an isotope with 4 protons, 2 electrons and 5 neutrons?
- 14. Multiple Choice
Which symbols represent different isotopes of the same element?
Ca-12 and C-12
Al-12 and P-12
He-2 and He-3
Be-2 and B-2
- 15. Multiple Choice
Which atom contains exactly 6 neutrons?
C-12
O-6
Mg-24
Na-12
- 16. Multiple Choice
Calculate the mass of 2.1 moles of Boron.
5.14 grams
10.81 grams
22.7 grams
2.1 grams
- 17. Multiple Choice
Calculate the moles of 75 grams of Silicon.
2.66 moles
2,106 moles
5.35 moles
75 moles
- 18. Multiple Choice
Calculate the atoms in a 3.0 gram sample of Neon.
2.0 X 1023 atoms
1.8 X 1024 atoms
8.94 x 10 22 atoms
2.9 x 1022 atoms
- 19. Multiple Choice
Using the average atomic mass, which element could this be?
Germanium
Tin
Antimony
Sulfur
- 20. Multiple Choice
What kind of graph is this?
Endothermic
Exothermic
- 21. Multiple Choice
Which element is on Group 13?
1
2
3
4
- 22. Multiple Choice
Which measurements change when we add a catalyst?
A
B
C
D
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