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- 1. Multiple ChoiceWhich element has 31 protons ?GalliumGermaniumGadoliniumPolonium
- 2. Multiple Choice
What number indicates the nucleus?1234 - 3. Multiple ChoiceWhat is at the center of every atom?An electronA compoundA moleculeA nucleus
- 4. Multiple ChoiceThe particles with no charge in an atom are the _______.electronsneutronsprotonsprotons and neutrons
- 5. Multiple ChoiceNucleus, positiveNucleus, negativeNucleus, neutralElectron Cloud, positive
- 6. Multiple Choice
What is the atomic number of chlorine?
35
18
7
17
- 7. Multiple Choice
How many protons are there in an atom of aluminium?
27
13
14
17
- 8. Multiple Choice
What is the symbol of manganese?
Mg
M
Ma
Mn
- 9. Multiple ChoiceWhat are valence electrons?electrons on the first orbital alwaysnucleusthe outermost shellthe number of electrons on the outermost orbital
- 10. Multiple ChoiceOxygen’s atomic number is 8. This means that an oxygen atom must have8 electrons8 protons8 neutronsa mass number of 8
- 11. Multiple Choice
99.9% of the atom's mass is found where?
nucleus
protons
electron cloud
neutrons
- 12. Multiple Choice
Protons are
negative
positive
neutral
- 13. Multiple Choice
Thompson was the first to discover a subatomic particle - the electron. What are the others?
neutrons & positrons
protons & neutrons
positrons & quarks
protons & positrons
- 14. Multiple Choice
Rutherford concluded that the amount of positive charge varies
with the amount of electrons in the nucleus.
as the the amount of isotopes varies.
with the amount of neutrons in the nucleus.
with different elements.
- 15. Multiple Choice
The word "proton" comes from an ancient Greek word meaning
amber.
to change or become flexible.
proteus.
positive.
- 16. Multiple Choice
Electrons are subatomic particles that exist
inside the nucleus.
in simultaneous dimensions.
in parallel universes.
outside the nucleus.
- 17. Multiple Choiceall matter is made of whatenergyatomselectronscompounds
- 18. Multiple Choice
Neutrons have almost exactly the same mass as
electrons.
positrons.
protons.
quarks.
- 19. Multiple Choice
James Dalton proved that the true nature of the atom could best be described as resembling "plum pudding."
True
False
- 20. Multiple Choice
Only protons & neutrons can be distinguished by mass, charge and position in an atom.
True
False
- Answer choicesTagsAnswer choicesTags