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I properties of acidic and basic mixtures using natural indicators; and

Quiz by Leslie Loren Silagon

Grade 7
Science
Philippines Curriculum: Grades 1-10

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10 questions
Show answers
  • Q1
    Which natural indicator can be used to test the acidity or basicity of substances?
    Baking Soda
    Sugar
    Red Cabbage
    Salt
    30s
    S7MT-Ii-6
  • Q2
    What color does litmus paper turn when it is in contact with water?
    Red
    Blue
    Green
    No color change
    30s
    S7MT-Ii-6
  • Q3
    Which of the following substances turns red litmus paper blue?
    Vinegar
    Lemon Juice
    Orange Juice
    Baking Soda
    30s
    S7MT-Ii-6
  • Q4
    What color does bromothymol blue turn when it comes in contact with an acidic substance?
    Red
    Yellow
    Green
    Blue
    30s
    S7MT-Ii-6
  • Q5
    What happens when purple cabbage juice is mixed with a base?
    It remains purple
    It turns greenish
    It turns blue
    It turns red
    30s
    S7MT-Ii-6
  • Q6
    What color does phenolphthalein turn when it is in contact with a basic substance?
    Pink
    Yellow
    Colorless
    Blue
    30s
    S7MT-Ii-6
  • Q7
    What color does blue litmus paper turn when it interacts with a basic substance?
    Red
    Yellow
    It stays blue
    Green
    30s
    S7MT-Ii-6
  • Q8
    Which substance would turn Litmus paper from blue to red?
    Soap
    Baking soda
    Egg white
    Vinegar
    30s
    S7MT-Ii-6
  • Q9
    What would happen if you mix lemon juice, a natural indicator, with a base?
    It turns less sour
    It changes color
    It turns sweet
    It turns bitter
    30s
    S7MT-Ii-6
  • Q10
    What color does turmeric turn when it comes in contact with a basic mixture?
    Red
    Yellow
    Green
    Blue
    30s
    S7MT-Ii-6

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