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- 1. Multiple ChoiceWhat is at the center of every atom?An electronA compoundA moleculeA nucleus
- 2. Multiple ChoiceWhich two particles make up the nucleus of an atom?Protons and ElectronsProtons and NeutronsMolecules and CompoundsNeutrons and Electrons
- 3. Multiple ChoiceIn an atom, what is the number of protons equal to?The number of electrons.The number of neutrons.The number of molecules.The number of nuclei.
- 4. Multiple Choice
The particles with no charge in an atom are the _______.electronsneutronsprotonsprotons and neutrons - 5. Multiple ChoiceThe positively charged particles of an atom are the ________.electronsprotonsneutronsprotons & neutrons
- 6. Multiple ChoiceThe negatively charged particles of an atom are the ______.electronsprotonsneutronsprotons & neutrons
- 7. Multiple ChoiceAn electron has this chargepositivenegativeneutral
- 8. Multiple ChoiceA neutron has this chargenegativepositiveneutral
- 9. Multiple ChoiceA proton has this chargenegativepositiveneutral
- 10. Multiple ChoiceA particle that moves around the nucleus is a(n)...ProtonNeutronElectronQuark
- 11. Multiple ChoiceThe center of an atom that holds protons and neutrons?modelelectronnucleusneutron
- 12. Multiple ChoiceWhat does the nucleus of an atom contain?Electrons and neutronsProtons and neutronsNeutrinos and positronsDNA and RN
- 13. Multiple ChoiceWhat number indicates an electron?1234
- 14. Multiple ChoiceWhat number indicates the nucleus?1234
- 15. Multiple ChoiceWhich element has 31 protons ?GalliumGermaniumGadoliniumPolonium
- 16. Multiple ChoiceWhat is the mass number?the number of protonsthe sum of the number of protons and the number of neutrons in the nucleus of an atomthe number of electronsthe number of neutrons
- 17. Multiple ChoiceWhat is the atomic number?number of protonsnumber of neutrons
- 18. Multiple ChoiceWhich element has 31 protons ?GalliumGermaniumGadoliniumPolonium
- 19. Multiple ChoiceOxygen’s atomic number is 8. This means that an oxygen atom must have8 electrons8 protons8 neutronsa mass number of 8
- 20. Multiple ChoiceWhat is the mass number of this element?5273259
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