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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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15
×
What is the most accurate method to measure pH?
Use a pH meter which uses an electrode to measure pH electrically.
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seesaw
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gift
Win 15 points!
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shark
Other team loses 25 points!
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baam
Lose 20 points!
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15
×
Acids turn litmus paper _____.
red
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15
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The more acidic the solution, the ______ the pH.
lower
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15
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Universal Indicator is green in the presence of a substance. What does this indicate?
The substance is neutral.
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15
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Non-metals generally form _______ oxides that dissolve in water to form _______ solutions.
acidic
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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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seesaw
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gift
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gift
Win 5 points!
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thief
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25
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monster
Reset all scores!
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rocket
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gift
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banana
Go to last place!
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15
×
Alkalis have a pH _________ than __.
greater than 7
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15
×
What kind of acid is in the atmosphere of Venus?
sulphuric acid (due to volcanic activity)
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15
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Alkalis turn litmus paper ______.
blue
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15
×
What acid is present in vinegar?
acetic acid (ethanoic acid)
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15
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What adjective means "can eat through material"
corrosive
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15
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A substance turns the Universal Indicator bright red. What does this "indicate"?
It is very acidic.
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