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Word Count: 429
What is in each test-tube What proof do I have of this Test-tube A Test-tube A had water in it I can base this on the fact that it was a neutral reacting neither to red or blue litmus paper Phenolphthalein also did not react to this substance The pH value was 7 neutral also adding to the proof that this substance was water because water is neutral The substance was clear and odorless and all of these reactions combined led me to my conclusion of substance A being water Test-tube B Test-tube B had spoiled milk in it The substance reacted to blue litmus paper and red litmus paper underwent no change Phenolphthalein did not change and the pH value was 6 a weak acid The appearance of this substance was a thick white liquid that had a horrible odor These observations led me to my conclusion that substance B is spoiled milk Test-tube C Test-tube C had ammonia in it The substance reacted to red litmus paper and it had no effect on blue litmus paper Phenolphthalein turned a hot pink color very quickly and the pH value was about 115 The substance was clear and had a strong odor to it These results led me to my conclusion that substance C is ammonia Test-tube D Test-tube D contained lemonade The substance reacted to blue litmus paper and red litmus underwent no changes It had no effect on Phenolphthalein and its pH value was 3 a strong acid Knowing that lemons are very acidic and that the substance was yellow and sweet smelling I concluded that substance D was lemonade Test-tube E I could not come to a conclusion on what substance E was It reacted weakly to blue litmus paper and it did not change red litmus It had no effect on Phenolphthalein but its pH value tested as 7 This cannot be correct however because all
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