Atomic Structure & Electrons in Atoms
Quiz by Dieterle 1
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21 questions
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- Q1The smallest particle of an element that retains its identity in a chemical reaction.Atom30s
- Q2The first theory to relate chemical changes to events at the atomic level.Dalton's atomic theory30s
- Q3A negatively charged subatomic particle.Electron30s
- Q4A stream of electrons produced at the negative electrode (cathode) of a tube containing a gas at low pressure.Cathode Ray30s
- Q5A positively charged subatomic particle found in the nucleus of an atom.Proton30s
- Q6A subatomic particle with no charge and a mass of 1 amu; found in the nucleus of an atom.Neutron30s
- Q7The tiny, dense central portion of an atom, composed of protons and neutrons.Nucleus30s
- Q8The number of protons in the nucleus of an atom of an element.Atomic Number30s
- Q9The total number of protons and neutrons in the nucleus of an atom.Mass Number30s
- Q10Atoms of the same element that have the same atomic number but different atomic masses due to different atomic masses due to a different number of neutrons.Isotopes30s
- Q11A unit of mass equal to one-twelfth the mass of a carbon-12 atom.Atomic Mass Unit (amu)30s
- Q12The weighted average of the masses of the isotopes of an element.Atomic Mass30s
- Q13The specific energies an electron in an atom or other system can have.Energy Level30s
- Q14The amount of energy needed to move an electron from one energy level to another.Quantum30s
- Q15The modern description, primarily mathematical, of the behavior of electrons in atoms.Quantum Mechanical Model30s