9th Grade Atomic theories and the composition of an atom test
Quiz by Jaime
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25 questions
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- Q1Most of the mass of an atom is located in the electrons of the atom.FALSETRUE45s
- Q2Electrons occupy most of the volume of an atom.TRUEFALSE45s
- Q3The positive charges in an atom are spread uniformly throughout the entire atom.TRUEFALSE45s
- Q4Electrons occupy most of the volume of an atom.TRUEFALSE45s
- Q5The positive charges in an atom are spread uniformly throughout the entire atom.FALSETRUE45s
- Q6Some positively charged alpha particles were deflected rather than passing straight through thin metal foil. To explain this, Rutherford postulated that the nucleus of the atom must be positive.FALSETRUE45s
- Q7Ions areelectrodeselectronsneutronscharged atoms (or groups of atoms).45s
- Q8A cation is apositively charged ion.negatively charged ion.negative electrode.positive electrode.45s
- Q9Cathode rays are beams ofneutronsprotonselectronsanions45s
- Q10An anion is apositive electrode.negative electrode.positively charged ion.negatively charged ion.45s
- Q11The atom is the fundamental building block of everything we hear, feel, see, and experience.FALSETRUE45s
- Q12John Dalton was the first person recorded as thinking that matter was ultimately composed of atoms.TRUEFALSE45s
- Q13John Dalton formalized an atomic theory that gained acceptance in the early 19th century.FALSETRUE45s
- Q14The plum pudding model proposed that negatively charged electrons were held in a sphere of positive charge.FALSETRUE45s
- Q15All of the positive charge of an atom is concentrated in the nucleus.TRUEFALSE45s