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15
×
Universal Indicator is green in the presence of a substance. What does this indicate?
The substance is neutral.
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15
×
Name a pH indicator other than litmus or Universal Indicator.
methyl orange or phenolphthalein (also hydrangea flowers, turmeric, and anthocyanins)
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25
×
What does "pH" actually stand for, anyway?!?!
The German "potenz H(ydrogen)", which means the power of the hydrogen-ion concentration.
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15
×
What acid is present in vinegar?
acetic acid (ethanoic acid)
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thief
Give points!
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25
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gift
Win 20 points!
Okay!
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gift
Win 25 points!
Okay!
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baam
Lose 10 points!
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15
×
What adjective means "can eat through material"
corrosive
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lifesaver
Give 15 points!
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shark
Other team loses 10 points!
Okay!
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rocket
Go to first place!
Okay!
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thief
Give points!
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25
25
×
Give an exception to the rule that "Oxides of non-metals are acidic oxides."
Water. It can be considered hydrogen oxide and a neutral oxide.
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15
×
A substance turns the Universal Indicator bright red. What does this "indicate"?
It is very acidic.
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15
×
Acids turn litmus paper _____.
red
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15
×
Alkalis have a pH _________ than __.
greater than 7
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15
×
The more acidic the solution, the ______ the pH.
lower
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eraser
Reset score!
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shark
Other team loses 10 points!
Okay!
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gift
Win 20 points!
Okay!
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thief
Give points!
5
10
15
20
25
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thief
Give points!
5
10
15
20
25
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seesaw
Swap points!
Okay!
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fairy
Take points!
5
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15
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25
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banana
Go to last place!
Oops!
15
×
A substance contains an excess of H+ ions. What is its pH?
It is acidic, so it is lower than 7.
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15
×
A substance contains an excess of OH- ions. What is its pH?
It is alkaline, so it is higher than 7.
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