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Chapter 32.1 - 32.4 review

Quiz by Paul Safara

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25 questions
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  • Q1
    Which force repels and attracts?
    gravitational force
    strong force
    electric force
    weak force
    30s
  • Q2
    Gravitational forces depend on mass. What comparable property underlies electrical forces?
    gravity
    charge
    air
    mass
    30s
  • Q3
    What would happen if electrons were positive and protons were negative?
    all prions would collide
    nothing ; this is a gauge symmetry
    electrons would annihilate protons
    a blackhole would form
    30s
  • Q4
    It is possible to distinguish on electron from another
    true ; electrons are identical
    false ; electrons are distinguishable
    30s
  • Q5
    Which has more mass... an electron or a proton?
    electron
    proton
    30s
  • Q6
    In a normal atom how many electrons are there if there are 6 protons?
    2
    0
    8
    6
    30s
  • Q7
    how to like charges behave towards each other?; how to unlike charges behave towards each other?
    attract ; repel
    repel ; attract
    30s
  • Q8
    how does a negative ion differ from a positive ion?
    negative ions have lost an electron
    negative ions have an extra electron
    30s
  • Q9
    what does it mean to say that charge is conserved?
    they aren't created or destroyed by transferred.
    they are created and destroyed
    30s
  • Q10
    If electrons are rubbed from hair on to a balloon does the balloon become positively or negatively charged?
    negatively
    positively
    30s
  • Q11
    why are metals good conductors?
    electrons are bound to the nucleus
    electrons are free to move
    30s
  • Q12
    why are materials such as rubber and glass good insulators?
    electrons are free to move
    electrons are tightly bound to the nucleus
    30s
  • Q13
    what is a semiconductor?
    material that can act as a conductor r but not an insulator
    material that can act as an insulator but not a conductor
    material that can act as an insulator and conductor
    30s
  • Q14
    transistors are made by exploring the features of
    insulators
    semiconductors
    conductors
    30s
  • Q15
    Semiconductors allow electrons to flow after impurities are added in a process known as
    magnifying
    electrifying
    doping
    purifying
    30s

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