1: How many electrons must be added to Carbon to fill the outer shell?
Eight electrons
Carbon does not have an outer shell
Four electrons
2: If you added Oxygen and set hydrocarbon molecules on fire, what would you get?
Hydrocarbons don't burn
C3H8O2
H2O and CO2
3: Where did the "Buckyball" get its name?
American engineer, Buckmkinster Fuller.
3rd allotrope of Carbon.
It looks like a domed roof.
4: A little Carbon dioxide puts the fizz in soda, but too much of it in the air can do what?
Traps heat in atmosphere and might raise Earth’s temperature.
Could cause climate changes.
A and B
5: Diamonds and graphite are both pure allotropes of Carbon. How are they different?
Diamonds are clear, graphite is grey.
Diamonds are hardest mineral known, graphite’s soft enough to leave a line on paper.
A and B
6: A girl is standing on a washing up bowl and touching a Van der Graaf machine. What do you think is the purpose of the washing up bowl?
Higher altitudes conduct electricity better
So the girl can reach the Van der Graff
To insulate the girl from the ground
7: Explain why the girl's hair is standing on end (no it's not her style, it's to do with the charge)
The static collected from the Van der Graff generator creates a field on the girls head that pulls her hair away from the machine.
The girl's hairs all pick up static electricity from the Van de Graaf machine and like charges repel, so each hair tries to get as far away from the other hairs as possible.
The girl has metal braids in her hair that are repelled by the Van der Graff generator
8: Which sub-atomic particle has no electrical charge?
They all have electrical charges
Anti-matter
The neutron
9: Which of the following will usually create static electricity?
Rub a wet rag on a plastic comb
Rub a coin with a plastic comb
Rub a plastic comb with some wool
10: How does friction cause electrons to go from one material to another?
It scrapes them off and deposits them on the other material
It doesn't move the electrons; adhesive forces pull off the electrons
Electrons are attracted to another material because of the Periodic Table
11: What happens to a material that collects electrons on its surface?
It has a negative charge
It has a positive charge
It shoots off sparks
12: What causes the noise of thunder?
Air clapping together after it suddenly cools
Friction on the rain drops
The noise caused by the bright flash
13: If you were spray painting a car and the paint droplets are given a positive charge, what charge should the car be given?
negative
positive
same charge
14: Why would less paint fall on the floor?
less paint falls on the floor because the paint being of the same charge attracts itself
less paint falls on the floor because its coming out with a smoother coating
less paint falls on the floor because more is being attracted to the car
15: How does the special spray prevent static cling?
It creates an opposite charge
It makes the clothes stiff so they don't cling
It discourages the collection of charges
16: When can high voltages be relatively safe?
If you wear rubber soled shoes
If the amount of current (amperes) is very small
If you stay more than 15 inches away
17: How can static electricity help control pollution?
By preventing lightning from starting fires
By cleaning particles from smoke stacks
By cleaning electrons from the air
18: What is a common way to create direct current electricity?
Lightning
Atomic energy
None of the above
19: What happens when a light burns out in a series circuit?
The other lights remain lit
The voltage increases dramatically
The circuit is broken
20: What is the frequency of AC in the United States?
60 Hertz
50 Hertz
60 cycles per minute
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