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5 questions
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- Q1Which of the following discoveries are in the chronological order?electron cloud--> nucleus --> electron shells --> electron (subatomic particle)electron (subatomic particle) --> nucleus --> electron shells --> electron cloudelectron shell --> electron cloud --> electron (subatomic particle) --> nucleusnucleus --> electron cloud --> electron (subatomic particle) --> electron shells30sSC.912.P.8.3
- Q2Which of the following experiments lead to the discovery of the first subatomic particle?Gold foil experimentCathode ray experimentSpectral line analysisQuantum chemistry30sSC.912.P.8.3
- Q3John Dalton claimed that all atom of an element are identical. Which if the following discoveries challenged this claim?The discovery of the neutronThe discovery of the protonThe discovery of the nucleusThe discovery of the electron30sSC.912.P.8.3
- Q4Which of the following is true for an atom of copper (Cu)Every atom had 29 neutronsEvery atom has a mass of 63.55amuEvery atom has 29 protonsEvery atom has 29 electrons30sSC.912.P.8.3
- Q5The nucleus was discovered after a scientist:Shot alpha particles at a thin piece of copper foilUsed a magnet to move a beam of electronsUse the presence of spectral lines at specific wavelengths to determine the location of electronsHigh level math to postulate the location of electrons30sSC.912.P.8.3