Atomic Structure and Electrostatics Flashcards

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1
Q

Name the particles in the atom

A

Proton
Neutron
Electron

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2
Q

Where is the proton located in the atom

A

in the nucleus

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3
Q

Where is the neutron located in the atom

A

in the nucleus

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4
Q

Where is the electron located in the atom

A

orbiting round

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5
Q

What is the charge of a proton

A

+1

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6
Q

What is the charge of a neutron

A

0

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7
Q

What is the charge of an electron

A

-1

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8
Q

What is the mass of a proton

A

1

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9
Q

What is the mass of a neutron

A

1

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10
Q

What is the mass of an electron

A

1 / 2000

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11
Q

An atom is mostly …

A

… empty space

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12
Q

How does Rutherford’s experiment show us atoms are empty space

A

because alpha particles pass straight through the thin gold foil

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13
Q

HOW do objects become charged

A

by rubbing two insulators together

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14
Q

WHY do objects become charged

A

when electrons are transferred of removed from an object

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15
Q

What do like charged do

A

repel

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16
Q

What do unlike charged do

A

attract

17
Q

What is the dangers of a lightning rod

A

to avoid electrostatic shock, we must use the rod to pass electrons safely to the ground

18
Q

What is the dangers of an earthing cable

A

aeroplanes and tankers become charged due to friction with the air
the cable allows the electrons to flow into the ground preventing sparks which could cause:
- fire
- explosions.

19
Q

Name 4 electrostatics

A
  • lightning rod
  • paint sprayer
  • smoke precipitator
  • earthing cables
20
Q

How does a paint sprayer work

A
  • nozzle charges the paint oppositely to bike
  • paint attracted to bike = little waste
  • paint repels itself = even coat
21
Q

How does a smoke precipitator work

A
  • smoke passes through a wire grid and becomes charged
  • attracts to the oppositely charged plates above
  • plates are turned off and banged together to gather soot = cleaner air
22
Q

How does Rutherford’s experiment show that the centre of the atom is positively charged

A

the positive charge of alpha particles are repelled by the nucleus’ positive charge