The Atom LC
Quiz by edel kinsella
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10 questions
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- Q1What is an energy level in an atom?The number of protons in an atomA fixed energy value an electron may haveThe speed of light in a vacuumThe total mass of an atom30s
- Q2What does Heisenberg’s Uncertainty Principle state?Electrons can be predicted with certaintyYou cannot measure position and velocity of an electron simultaneouslyElectrons only exist when observedAn electron can exist in two places at once30s
- Q3What is an orbital in the context of atomic structure?An energy level of an electronThe path of an electron around the nucleusA region of space where there's a high probability of finding an electronA fixed position of an electron30s
- Q4What does Dalton's Atomic Theory state about atoms?Atoms can be split into smaller partsAtoms cannot be created or destroyedAtoms are larger than moleculesAtoms do not exist in nature30s
- Q5Who discovered the electron?William CrookesRobert MillikanErnest RutherfordJJ Thomson30s
- Q6What did JJ Thomson determine about electrons?They are positive particlesThey are negative particlesThey have no chargeThey are neutral particles30s
- Q7Which experiment did Robert Millikan perform?Alpha particle experimentOil drop experimentGold foil experimentCathode ray experiment30s
- Q8What does the Plum Pudding Model propose?Electrons are inside protonsElectrons orbit a nucleusA solid positive sphere with embedded electronsAtoms are indivisible30s
- Q9Who discovered the nucleus of the atom?JJ ThomsonWilliam CrookesRobert MillikanErnest Rutherford30s
- Q10Which particle was discovered by Chadwick?ProtonElectronAlpha particleNeutron30s