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- 1. Multiple ChoiceWhich subatomic particles contribute the most to the mass of an atom?Protons, Neutrons, ElectronsProtons onlyProtons and ElectronsProtons and Neutrons
- 2. Multiple Choice
What is the number of protons that the element in this image contain?1471518 - 3. Multiple ChoiceIf an atom has 12 positively charged subatomic particles, which of the following must it also have to be considered a neutral atom?12 neutrons12 electrons12 protons24 protons and neutrons
- 4. Multiple ChoiceAn atom has 10 protons, 15 neutrons and 10 electrons what is its mass number.2010525
- 5. Multiple ChoiceThe particles of the atom you can find by knowing the atomic number.neutronsprotons and electronsprotons and neutronsatomic mass
- 6. Multiple ChoiceAn element with a mass number of 11 and an atomic number of 5 has how many neutrons?115616
- 7. Multiple ChoiceThe mass of one proton is greater than the mass of one...neutronelectron
- 8. Multiple ChoiceWhat is the atomic mass of the atom pictured?9101819
- 9. Multiple ChoiceThis particle determines what element you have - the elements identity.electronprotonneutronvalence shell
- 10. Multiple ChoiceThis causes the mass of the nucleus to increase.adding an electronadding a neutronmore orbitalsadding negatively charged particles
- 11. Multiple ChoiceWhich particles make up the nucleus of an atom?protons and neutronselectrons and protonselectrons, protons, and neutronselectrons and neutrons
- 12. Multiple ChoiceWhat charge does the nucleus have and why?positive - the neutrons do not have a chargepositive - the neutrons and protons are positively charged particlesneutral - the neutral charge dominates the positive chargeneutral - electrons cancel out the positive charge of the atom
- 13. Multiple ChoiceWhat is the mass number and name of an element with 8 protons and 8 neutrons?16 - Carbon16 - Oxygen24 - Oxygen8 - Neon
- 14. Multiple Choice
Which parts of the atom move around the nucleus?
electrons
protons
electrode particles
neutrons
- 15. Multiple Choice
Found orbiting outside the nucleus, this subatomic particle has a negative charge.
Neutron
Proton
Electron
Idontknowatron
- 16. Multiple Choice
The atomic number will always be the same as
Mass number and number of protons
Number of neutrons and protons
number of electrons and protons
Number of electrons and neutrons
- 17. Multiple Choice
How many electrons does Oxygen need to fill its outer shell?
3
4
1
2
- 18. Multiple ChoiceHow many protons does an Aluminum atom have? (use the picture to help you)27131440
- 19. Multiple ChoiceWhat characteristic of an element's atoms ALWAYS determines the element's identity?the number of neutronsthe number of protonsthe atomic massthe number of valence electrons
- 20. Multiple ChoiceHow many valence electrons does Hydrogen have?1234
- 21. Multiple ChoiceValence electrons are the...Innermost electronsMiddle electronsOutermost electronsAny electrons
- 22. Multiple Choice235
- 23. Multiple Choice1234
- 24. Multiple ChoiceValence electrons are:Electrons farthest away from the nucleusElectrons closest to the nucleusElectrons that just come and go - they don't stay with the atomElectrons in the second shell
- 25. Multiple ChoiceWhat does the nucleus of an atom contain?Electrons and neutronsProtons and neutronsNeutrinos and positronsElectrons and megatrons
- 26. Multiple ChoiceThis element has 20 neutrons and 19 negatively charged particlesKrKRbXe
- 27. Multiple ChoiceHow many electrons can the first energy level hold?1280
- 28. Multiple Choice
All atoms with more than one energy level are most stable with (or would "prefer") how many electrons in their valence shell?
1
2
8
16
- 29. Multiple ChoiceTrue or False - Protons and Neutrons have about the same mass.True - They have about the same massFalse - They do not have about the same mass
- 30. Multiple ChoiceThe subatomic particles in green are...ProtonsNeutronsElectrons
- 31. Multiple ChoiceHow many protons does this atom have?3642
- 32. Multiple ChoiceWhat subatomic particle is electrically neutral (no charge)?ProtonIonNeutronElectron
- 33. Multiple ChoiceNumber of protons in an atom.Atomic NumberMass NumberIsotopeValence electrons
- 34. Multiple ChoiceWhat parts of the atom make up most of its mass?protons and electronsprotons and neutronsneutrons and electronselectrons
- 35. Multiple ChoiceMost of the atom is filled withelectronsempty spacethe nucleusprotons
- 36. Multiple ChoiceHow many protons (+p) does this atom have?27816
- 37. Multiple ChoiceThe subatomic particles of an atom include all of the following EXCEPTprotonselementsneutronselectrons
- 38. Multiple ChoiceHow many neutrons does a sodium atom have?23111234
- 39. Multiple Choiceall matter is made of whatenergyatomselectronscompounds
- Answer choicesTagsAnswer choicesTags