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15
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How do you prove an oxide is a basic oxide?
Basic oxides dissolve in water to produce basic solutions.
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baam
Lose 20 points!
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seesaw
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rocket
Go to first place!
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baam
Lose 15 points!
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15
×
What is the first ionisation energy?
The first ionisation energy is the energy required to remove one mole of electrons from one mole of gaseous atoms to form one mole of gaseous 1+ ions.
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15
×
What is the effective nuclear charge of sodium (Z = 11)?
+1
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15
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Is the chlorine anion (Cl-) radius bigger or smaller than the chlorine neutral atom radius?
bigger
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monster
Reset all scores!
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fairy
Take points!
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25
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shark
Other team loses 20 points!
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lifesaver
Give 5 points!
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baam
Lose 25 points!
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gold
Win 50 points!
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shark
Other team loses 10 points!
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thief
Give points!
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25
15
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Which is the the most reactive group of metals?
The alkali metals
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15
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The elements are arranged in order of increasing __________.
nuclear charge or number or protons
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15
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Which of the following IS NOT a periodic trend: bond enthalpy, atomic radius or effective nuclear charge?
bond enthalpy
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15
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Is the sodium cation (Na+) radius bigger or smaller than the sodium neutral atom radius?
smaller
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15
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Mg2+ and O2- are isoelectronic. What does it mean?
That they have the same number os electrons
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15
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Which of the two, metals or non-metals, tend to gain electrons to form negative ions (anions) instead of losing electrons to form positive ions?
Non-metals
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seesaw
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shark
Other team loses 20 points!
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shark
Other team loses 20 points!
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banana
Go to last place!
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15
×
Which is the most reactive group of non-metals?
The Halogens
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15
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Is MgO a basic or acidic oxide?
basic
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