Zusammenfassung der Ressource
Frage 1
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What is the definition of an atom?
Antworten
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A basic partical from which all matter is made up
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Fast moving particles which emit radioactive substances
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A substance from which chromosomes are made
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A positively or negatively charged particle formed when an atom or group of atoms lose or gain electrons
Frage 2
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Which two particles are found in the nucleus of any atom?
Frage 3
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The mass of an electron is about one two-thousandth of the mass of a proton or a neutron
Frage 4
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What are electrical conductors?
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Materials that allow electricity to flow through them easily
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Materials that do not allow electricity to flow through them
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Materials that do not make a difference to a circuit
Frage 5
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What is an example of a good electrical conductor?
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Metal
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Plastic
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Wood
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Cotton
Frage 6
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A good example of an insulator is plastic
Frage 7
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An insulator cannot become electrically charged
Frage 8
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What has to happen for static electricity to be produced?
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Electrons transfer from one non-electrically charged material to another non-electrically charged material
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Protons are removed from the nucleus of a material
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Neutrons are added to the outer electron ring of a material
Frage 9
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When static electricity is being made, what kind of charge does the material receiving electrons now have?
Antworten
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Positive charge
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Negative charge
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No charge
Frage 10
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If you rubbed a Perspex rod with a cloth, it loses electrons. What charge does it become?
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Positively charged
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Negatively charged
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No charge
Frage 11
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What kind of materials repel each other?
Frage 12
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What kind of materials repel each other?
Frage 13
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What would be the difference in attraction with these two examples? If a charged ebonite rod was placed next to a charged Perspex rod and if a charged Perspex rod was placed next to another charged Perspex rod
Antworten
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The charged ebonite rod and the charged Perspex rod would attract and the two charged Perspex rods would repel
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The charged ebonite rod and the charged Perspex rod would repel and the two charged Perspex rods would attract
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Both of the examples would repel each other
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Both examples would attract each other
Frage 14
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Which of the following all involve the movement of electrons?