Thursday, 2 May 2013


What is pH?
pH is a chart measured on a scale from 0-14. With 7 being half of 14, that is considered neutral. Anything below 7, would be an acid and anything greater than 7 would be defined as a base.

What are some examples of pH indicators?

Red Cabbage Indicator, would be known as a natural indicator. When boiled, it can be used to determine acids, basics or neutral items/products. 

Litmus Paper is another indicator and is known as a synthetic indicator. This also helps determine acids, basics and neutral items/products.

Explain the process of how to measure the pH of the acid or base using indicators.
1. Collect a spotting tile
2. Place drops of the different acid/base on the spotting tile
3. Place 1-2 drops of the natural indicator on the acid/base
4. Observe the colour change
5. Estimate/check the pH range of the acid or base
6. Record results


1. Place a drop of acid or base on the end of litmus paper
2. Observe the colour change
3. Estimate/check the pH range of the acid or base
4. Record results

Explain how pH is relevant in our life.
pH is relevant in everyone's life because it's used in our everyday lives. Our body liquids range in pH, even in our stomach. Our stomach is protected by mucus to help stop the highly acidic acids in our stomach.

I use lemon juice when I help my Mum cook and bake. I also use toothpaste to brush my teeth, otherwise my teeth would be rotten because toothpaste helps clean teeth.

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