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PH Paper Lab Report

A student's lab report for PH Paper

Kelvin Linares

on 8 November 2011

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Transcript of PH Paper Lab Report

PH Paper Lab Report Question
How can I tell the difference between bases, acid and neutral?
If I dip the PH paper in a sample then I will be able to tell whether or not the sample is bases, acid or neutral because there’s a graph that tells you what color the PH paper turns to when it’s either of the three categories.
Background Info
PH paper is used by many scientists and the samples are all liquid because PH paper is only used when the test subjects are in a liquid state. This is the PH scale for the experiment.
The purpose for this experiment is to find out whether the subject or sample is either bases, acid or neutral.
Controlled Variable - PH paper, testing plate and amount of liquid.
Independent Variable- different substances
Dependent Variable- PH number ( 1-14)
8 pieces of PH paper
Sample plate with 8 sample holders
• Shampoo
• Lemon
• Vinegar
• Banana
• Baking soda
• Water
• Magnesia
• Acetone
Steps 1 – gather all the materials
Steps 2 – set the plate on a flat surface
Steps 3 – place the samples in one of each hole
Steps 4 – take PH paper and place in the hole of each sample.
Steps 5 – when the liquid stops raising onto the paper then you take it out and see the color then record your data.
Sample PH number Acid Bases Neutral
Shampoo 11 No Yes No
Lemon 2 No Yes No
Vinegar 13 Yes No No
Banana 4 No Yes No
Baking soda 9 Yes No No
Water 5 No Yes No
Magnesia 10 Yes No No
Acetone 1 Yes No No
Data Analysis
I realized when I analyzed; shampoo, lemon, banana, and water are all bases objects. Vinegar, baking soda magnesia, and acetone were acid. None of the household objects were neutral.
I never had a prediction for the household subjects. I was amazed how lemon can conducted electricity and also acetone.
I couldn’t tell whether which one is strongest so I basically had a question mark on my head when I had to answer that question.
In conclusion my hypothesis was correct because I could tell whether the subject was acid bases or neutral. I also know a few new facts like for example that lemon and acetone can conduct electricity. In my experiment there weren’t any problems expecting the part where I had to measure the amount of liquid substance.
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