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Published byMargery Terry Modified over 9 years ago
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Acids and Bases Charisma Jenny G. Mallari San Bartolome High School Charisma Jenny G. Mallari San 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 chloride C – milk A – detergent solution D – vinegar
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Correct! Detergent solution or soapy water has a pH=12. pH > 7alkaline pH = 7neutral pH < 7acidic
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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 litmusC- 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 H 2 O + salt Superb! In a neutralization reaction, an acid donates its proton H + to the base to produce H 2 O 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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