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Write down the aim of this investigation. Formulate an investigative question for this investigation. Write down the hypothesis for this investigation.
Chemistry
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You've sent the image again, so I'll continue with the method for question 5 from where we left off.
- 5 METHOD (USING UNIVERSAL INDICATOR PAPER) (Continued)
- Step 4: Stir the bicarbonate of soda and water mixture with a glass rod until the bicarbonate of soda dissolves.
- Step 5: Dip one strip of universal indicator paper into the bicarbonate of soda solution and compare its color to the pH chart to determine the initial pH. Record this pH.
- Step 6: Add one dropper/syringe full of white vinegar to the bicarbonate of soda solution.
- Step 7: Stir the solution thoroughly with the glass rod.
- Step 8: Dip a new strip of universal indicator paper into the solution and determine the new pH. Record this pH.
- Step 9: Repeat steps 6-8, adding one dropper/syringe full of white vinegar at a time, until the solution becomes acidic (pH less than 7) or neutral (pH 7).
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