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Interactive pH scale.

"pH Puzzle" is a small knowledge level game to sort the water solutions in the correct pH indicator. Fun educational game to study the pH scale used to specify how acidic or basic a water-based solution is. Chemistry learning game, suitable for online lessons and interactive classes. Free online game.


This chemistry class game include the following water solutions:
  • Accumulator Acid - pH 0 (ACIDIC)
  • Stomach Acid - pH 1
  • Lemon Juice - pH 2
  • Vinegar - pH 3
  • Tomato Juice - pH 4
  • Black Coffee - pH 5
  • Milk - pH 6
  • Distiled Water - pH 7 (NEUTRAL)
  • Blood - pH 8
  • Baking Soda - pH 9
  • Milk of Magnesia - pH 10
  • Ammonia Solution - pH 11
  • Soap Water - pH 12
  • Bleach - pH 13
  • Drain Cleaner - pH 14 (ALKALINE)

  • Original picture by: https://blog.jencoi.com/what-is-ph-in-water-testing
pH Puzzle

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How to play pH Puzzle

There are 15 water solutions from every day life at the top of the screen. Drag and drop them on the correct pH index of the pH scale. Sort all 15 elements correctly to win the game.

Knowledge Achievements:
Know at least 1 acidic, neutral and base pH to get +1 Knowledge Level.
Difficulty: Very easy.

Fun pH Puzzle Screenshot

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Class subject: pH Hydrogen ion index.

In chemistry, pH is a scale used to specify how acidic or basic a water-based solution is. Acidic solutions have a lower pH, while basic solutions have a higher pH. At room temperature (25C or 77F), pure water is neither acidic nor basic(alkaline) and has a pH of 7.

The pH scale is logarithmic and inversely indicates the concentration of hydrogen ions in the solution (a lower pH indicates a higher concentration of hydrogen ions). This is because the formula used to calculate pH approximates the negative of the base 10 logarithm of the molar concentration of hydrogen ions in the solution. More precisely, pH is the negative of the base 10 logarithm of the activity of the hydrogen ion.

The exact meaning of the p in pH is disputed, as Sorensen did not explain why he used it. He describes a way of measuring it using potential differences, and it represents the negative power of 10 in the concentration of hydrogen ions.

pH is defined as the decimal logarithm of the reciprocal of the hydrogen ion activity, aH+, in a solution: pH Formula

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