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20
×
How can excessively alkaline soil be handled?
Add peat, compost or manure
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lifesaver
Give 25 points!
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rocket
Go to first place!
Okay!
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fairy
Take points!
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25
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baam
Lose 25 points!
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10
×
What do you call a base that is soluble in water?
an alkali
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seesaw
Swap points!
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shark
Other team loses 20 points!
Okay!
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gift
Win 10 points!
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banana
Go to last place!
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20
×
Why are these hydrangea flowers different colors?
Each one is a pH indicator.
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15
×
Which gas fills bags of chips and snacks to make sure the food doesn't go rancid from exposure to oxygen?
nitrogen
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5
×
What is KOH?
caustic potash (potassium hydroxide)
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25
×
What do factories have to spray acidic waste with jets of slaked lime before the gases leave the chimneys?
a flue-gas desulfurizer
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15
×
What is the formula for caustic potash?
KOH (used in making soap)
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15
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What is the formula for limewater?
CaOH (calcium hydroxide)
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10
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A flue-gas desulfurizer reduces emissions of what gas?
sulfur dioxide
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15
×
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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10
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What is the formula for lye (caustic soda)?
NaOH (used in making paper, soaps, and in cleaners)
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15
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What is the formula for ammonia?
NH3
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boom
Lose 50 points!
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fairy
Take points!
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25
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fairy
Take points!
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25
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thief
Give points!
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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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