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15
×
How do you calculate the number of neutrons in an atom?
Subtract the atomic number from the mass number.
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20
×
What do elements in the same period of the periodic table have in common?
They have the same number of electron shells.
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20
×
In the periodic table, which group contains the alkali metals?
Group 1 (I A)
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10
×
Which element has the atomic number 79 and is known for its use in jewelry?
Gold (Au)
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banana
Go to last place!
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fairy
Take points!
5
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15
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25
×
shark
Other team loses 20 points!
Okay!
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lifesaver
Give 20 points!
Oops!
15
×
What is an ion?
An atom or molecule with an unequal number of protons and electrons, resulting in a charge.
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15
×
Which subatomic particle did J.J. Thomson discover?
Electron
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seesaw
Swap points!
Oops!
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gold
Win 50 points!
Okay!
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shark
Other team loses 10 points!
Okay!
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baam
Lose 15 points!
Oops!
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lifesaver
Give 20 points!
Oops!
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shark
Other team loses 15 points!
Okay!
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rocket
Go to first place!
Okay!
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banana
Go to last place!
Oops!
20
×
What are the elements found in Group 17 (VII A) called?
Halogens (e.g., fluorine, chlorine)
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20
×
What are metalloids?
Elements with properties that are intermediate between metals and non-metals (e.g., silicon, boron).
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trap
No points!
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seesaw
Swap points!
Okay!
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shark
Other team loses 25 points!
Okay!
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thief
Give points!
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25
15
×
Which atomic model introduced the concept of electrons orbiting the nucleus in energy levels or shells?
Niels Bohr
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20
×
What do elements in the same period of the periodic table have in common?
They have the same number of electron shells.
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20
×
Name the transition metals found in the middle of the periodic table.
Elements from groups 3 to 12
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15
×
Who proposed the first atomic model with indivisible atoms?
John Dalton
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