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Score
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15
×
rain, hail or snow which falls from clouds
humidity
precipitation
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15
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the study of the weather
climatology
meteorology
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15
×
What charge does an electron have?
Neutral
positive
Negative
none of the above
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15
×
In which atomic model are electrons embedded within a positively charged "pudding"?
Modern quantum model
Rutherford's model
Thompson's model
Bohr's model
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15
×
When a chemical reaction takes place and a product is formed from the reactants, it is often very important that the product is____
pure
mixed
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15
×
Which of these particles has no electrical charge?
neutron
electron
proton
none of the above
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eraser
Reset score!
Oops!
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shark
Other team loses 10 points!
Okay!
×
gift
Win 5 points!
Okay!
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baam
Lose 25 points!
Oops!
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baam
Lose 20 points!
Oops!
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fairy
Take points!
5
10
15
20
25
×
gift
Win 25 points!
Okay!
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thief
Give points!
5
10
15
20
25
15
×
how much water vapour there is in the atmosphere
temperature
humidity
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15
×
Who proposed the atomic model with a nucleus and electrons surrounding it?
J.J. Thompson
Ernest Rutherford
James Chadwick
Niels Bohr
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lifesaver
Give 25 points!
Oops!
×
gift
Win 25 points!
Okay!
×
shark
Other team loses 15 points!
Okay!
×
lifesaver
Give 20 points!
Oops!
15
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What was the primary conclusion of Rutherford's gold foil experiment?
Atoms are indivisible particles.
Electrons are scattered randomly in a positive sphere
atom is mostly empty space with a dense + charged nucleus
The mass of an atom is evenly distributed.
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15
×
In Rutherford's gold foil experiment, most alpha particles passed straight through the foil. What did this observation suggest?
Atoms have a lot of empty space.
Atoms are densely packed with particles.
Electrons are in fixed orbits.
Atoms have a lot of empty space.
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15
×
Used to measure atmospheric pressure
thermometer
barometer
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15
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the layer of gas around the Earth
humidity
atmosphere
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15
×
What is the product of the reactants: silver nitrate + sodium chloride
sodium sulfate + water
sodium nitrate + silver chloride
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