KS3 Acids and Alkalis

Cards (24)

  • What type of acid is found in car batteries?
    Sulfuric acid
  • Which acid is found in citrus fruits like lemons?
    Citric acid
  • What acid does the stomach contain?
    Hydrochloric acid
  • What acid is present in vinegar?
    Ethanoic acid
  • Which acid is commonly found in fizzy drinks?
    Carbonic acid
  • What common characteristic do all the acids mentioned share?
    They are all sour
  • What alkali is commonly found in toothpaste?
    Sodium hydroxide
  • What alkali is found in bleach?
    Sodium hydroxide
  • What common property do all alkalis share?
    They are soapy
  • Why are some acids and alkalis safer to use than others?
    Some are everyday items like vinegar
  • What safety equipment might be needed when handling dangerous acids?
    Gloves and safety goggles
  • What are the three most common acids mentioned?
    Hydrochloric, sulfuric, and nitric acid
  • What do all acids contain in their chemical symbols?
    Hydrogen
  • What is used to identify acids and alkalis in colorless solutions?
    Universal indicator
  • What happens when universal indicator is added to colorless solutions?
    It shows a range of different colors
  • What color does the universal indicator turn for strong acids?
    Red
  • What color does the universal indicator turn for weak acids?
    Orange or yellow
  • What color indicates a neutral solution on the pH scale?
    Green
  • What pH value is considered neutral?
    pH 7
  • What do the colors on the pH scale indicate about acids and alkalis?
    Strength of the acid or alkali
  • What is the pH scale and its significance?
    • Measures acidity and alkalinity
    • Ranges from 0 (strong acid) to 14 (strong alkali)
    • pH 7 is neutral
    • Color changes indicate strength of acids and alkalis
  • What are the safety precautions when handling acids and alkalis?
    • Use gloves and safety goggles
    • Identify irritant and corrosive symbols
    • Handle everyday items safely
    • Use protective equipment for dangerous substances
  • What are the common indicators used to identify acids and alkalis?
    • Universal indicator for pH scale
    • Litmus paper for basic identification
    • Different indicators have varying effectiveness
  • What are the characteristics of acids and alkalis?
    • Acids: sour, contain hydrogen, pH < 7
    • Alkalis: soapy, contain hydroxide, pH > 7
    • Neutral: neither acid nor alkali, pH = 7