Acids and Bases (Grade 12 NSC Matric Physical Sciences): Quizzes
📚Quizzes
Practise the questions
10 questions from this quiz
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Practise the questions
10 questions from this quiz
What three chemicals are produced by electrolysis of brine?
What three chemicals are produced by electrolysis of brine?
, , and
What product forms when chlorine reacts with hydroxide ions below 60°C?
What product forms when chlorine reacts with hydroxide ions below 60°C?
Sodium hypochlorite ()
Which use is NOT listed for sodium hydroxide?
Which use is NOT listed for sodium hydroxide?
Water purification
Why are amino acids described as amphoteric?
Why are amino acids described as amphoteric?
They can act as acids or bases
What type of bond forms between two cysteine molecules in hair?
What type of bond forms between two cysteine molecules in hair?
Disulfide bond (S-S linkage)
What is the natural pH range of hair?
What is the natural pH range of hair?
pH 4-5 (slightly acidic)
What chemical is used as a reducing agent in permanent waving?
What chemical is used as a reducing agent in permanent waving?
Ammonium thioglycolate
What is the pH range of lye hair relaxers?
What is the pH range of lye hair relaxers?
pH 12-14
How many washes do demi-permanent hair dyes typically last?
How many washes do demi-permanent hair dyes typically last?
Approximately 12 washes
What damage can pH 12-14 hair treatments cause?
What damage can pH 12-14 hair treatments cause?
Severe chemical burns and scarring