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- 1. Multiple Choice
In chemistry, how many types of subatomic particles are considered to form everything?twothree92billions - 2. Multiple ChoiceWhat is defined as "a well-tested set of ideas that explains many disparate observations"?a theorya guessa lawa hypothesis
- 3. Multiple ChoiceWhich scientist mathematically proved the existence of atoms and molecules in 1905?Robert BrownAlbert EinsteinAntoine LavoisierErnest Rutherford
- 4. Multiple ChoiceNamed after a botanist, the random motion of particles suspended in a fluid is called _____Mendelian motionEinsteinian motionBrownian motionRutherford motion
- 5. Multiple ChoiceThe word "atom" is from the _____Latin for "three parts"Greek for "indivisible"Gaelic for "uncuttable"French for "tiny"
- 6. Multiple ChoiceThe proton is _____heavy and neutralheavy and negatively chargedheavy and positively chargedlight and negatively charged
- 7. Multiple ChoiceThe neutron is _____heavy and neutralheavy and negatively chargedheavy and positively chargedlight and neutral
- 8. Multiple ChoiceThe electron is _____heavy and positively chargedlight and positively chargedlight and neutrallight and negatively charged
- 9. Multiple ChoiceThe electron is about _____ times less massive than the proton or neutron.18180180018 000
- 10. Multiple ChoiceProtons and neutrons hang out in the nucleus, and are referred to as _____kernalsbosonsnucleotidesnucleons
- 11. Multiple ChoiceWhich particle hangs out around the nucleus and is involved in chemical reactions?the electronthe protonthe neutronthe photon
- 12. Multiple Choice
Which subatomic particles determine the identity of an element?
electrons
protons
neutrons
photons
- 13. Multiple ChoiceThe number of protons in an element is its _____atomic weightrelative atomic massatomic numbermass number
- 14. Multiple ChoiceArgentum, the original name for silver, is Latin for _____shiny gray stuffvaluablemountainsArgentina
- 15. Multiple ChoiceNuclei are held together by the strongest of the four fundamental forces of physics, _____the electromagnetic forcethe gravitational forcethe strong nuclear forcethe weak nuclear force
- 16. Multiple ChoiceNeutrons serve as a kind of _____charge carriershock absorber for collisionsshield for radiationbuffer between the protons
- 17. Multiple ChoiceWhich term is basically the weighted average of the number of nucleons found in nature?atomic weightrelative atomic massrelative atomic numbermass number
- 18. Multiple ChoiceWhich term represents just the total number of nucleons in the nucleus of an atom?atomic weightrelative atomic massatomic numbermass number
- 19. Multiple ChoiceVariants of an element, with different masses but the same chemical properties, are called _____isotropicsisothermsisomersisotopes
- 20. Multiple ChoiceAtoms of the same element have the same number of _____electrons in their nucleiorbiting protonsneutrons in their nucleiprotons in their nuclei
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