Chapter 32.1 - 32.4 review
Quiz by Paul Safara
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25 questions
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- Q1Which force repels and attracts?gravitational forcestrong forceelectric forceweak force30s
- Q2Gravitational forces depend on mass. What comparable property underlies electrical forces?gravitychargeairmass30s
- Q3What would happen if electrons were positive and protons were negative?all prions would collidenothing ; this is a gauge symmetryelectrons would annihilate protonsa blackhole would form30s
- Q4It is possible to distinguish on electron from anothertrue ; electrons are identicalfalse ; electrons are distinguishable30s
- Q5Which has more mass... an electron or a proton?electronproton30s
- Q6In a normal atom how many electrons are there if there are 6 protons?208630s
- Q7how to like charges behave towards each other?; how to unlike charges behave towards each other?attract ; repelrepel ; attract30s
- Q8how does a negative ion differ from a positive ion?negative ions have lost an electronnegative ions have an extra electron30s
- Q9what does it mean to say that charge is conserved?they aren't created or destroyed by transferred.they are created and destroyed30s
- Q10If electrons are rubbed from hair on to a balloon does the balloon become positively or negatively charged?negativelypositively30s
- Q11why are metals good conductors?electrons are bound to the nucleuselectrons are free to move30s
- Q12why are materials such as rubber and glass good insulators?electrons are free to moveelectrons are tightly bound to the nucleus30s
- Q13what is a semiconductor?material that can act as a conductor r but not an insulatormaterial that can act as an insulator but not a conductormaterial that can act as an insulator and conductor30s
- Q14transistors are made by exploring the features ofinsulatorssemiconductorsconductors30s
- Q15Semiconductors allow electrons to flow after impurities are added in a process known asmagnifyingelectrifyingdopingpurifying30s