acids and bases charisma jenny g. mallari san bartolome high school charisma jenny g. mallari san...
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![Page 1: Acids and Bases Charisma Jenny G. Mallari San Bartolome High School Charisma Jenny G. Mallari San Bartolome High School](https://reader037.vdocuments.us/reader037/viewer/2022103022/56649d155503460f949ea1ee/html5/thumbnails/1.jpg)
Acids and Bases
Charisma Jenny G. MallariSan Bartolome High School
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Write the letter of the correct answer. (5marks)
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1. Which of the following is alkaline?
B – hydrogen chlorideC – milk
A – detergent solution
D – vinegar
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Correct!Detergent
solution or soapy water has a
pH=12. pH > 7 alkaline
pH = 7 neutral
pH < 7 acidic
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2. Using the universal solvent, what will be the observed color if pH=7?
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• Excellent! Green will be the observed color when we add the universal solvent to a neutral substance.
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3. Using litmus paper on lemon juice, which is a correct observation?
B- Red litmus turns blue
A- No change in blue litmus C- Blue litmus turns red
D- Both litmus papers changed colors
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• You got it right!
Remember this
Blue turns Red--- Acid
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4. What do you call the reaction between an acid and a base, that produces salt and water?
• A – combustion• B – hydrolysis• C – neutralization• D – solvation
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ACID+ BASE H2O + salt
• Superb! In a neutralization reaction, an acid donates its proton H+ to the base to produce H2O and salt.
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5. Which of the following will you add to the soil to lower pH?
• A – crushed marble• B – crushed shells• C – lime• D – urea
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Excellent!
Urea lowers the pH of the soil. It makes the soil slightly acidic.
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End of Quiz
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