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20
×
Name one of the substances commonly referred to as "lime".
calcium oxide, calcium hydroxide, calcium carbonate=limestone, or chalk
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20
×
How can excessively alkaline soil be handled?
Add peat, compost or manure
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25
×
The atmosphere is 78% nitrogen and 21% oxygen. Name the next three most common gases.
argon (.9%) carbon dioxide (.04%) neon (.002%)...water vapor also OK (0%-3%)
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20
×
How can excessively acidic soil be dealt with?
It can be neutralized with lime (calcium oxide, calcium hydroxide, calcium carbonate=limestone, or chalk).
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10
×
What substance has the formula NH3?
ammonia
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15
×
Alkalis feel _____ to the skin (They convert the oils in your skin into _______).
soapy/soap
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20
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Which gas is used in the Haber process to manufacture ammonia and fertilizers?
nitrogen
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lifesaver
Give 15 points!
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gift
Win 25 points!
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gift
Win 25 points!
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banana
Go to last place!
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20
×
Why might someone swallow the insoluble magnesium hydroxide?
It is an antacid.
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15
×
Which letter is bases and which letter is alkalis?
A is alkalis. B is bases.
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15
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Most bases are insoluble in water. Name a common alkali, a base that IS soluble.
sodium hydroxide, potassium hydroxide, calcium hydroxide (limewater), ammonia (ammonium hydroxide)
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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 15 points!
Okay!
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lifesaver
Give 25 points!
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15
×
What do ALL metal oxides and hydroxides do?
They all neutralize acids, whether soluble or not. They are bases.
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eraser
Reset score!
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shark
Other team loses 20 points!
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fairy
Take points!
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25
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baam
Lose 10 points!
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15
×
What is the formula for caustic potash?
KOH (used in making soap)
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boom
Lose 50 points!
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fairy
Take points!
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25
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rocket
Go to first place!
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thief
Give points!
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25
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