PH meter

A pH meter is a special tool used to measure how "sour" (acidic) or "bitter" (basic) a liquid is. It works by sending small electrical signals through the liquid and then measuring how much resistance the liquid gives back.

Imagine you have a magic wand that can measure how sour or bitter different things are. It's like a thermometer, but instead of measuring temperature, it measures something called pH. When you dip the wand into a liquid, it sends out some little signals that help it figure out how sour or bitter the liquid is. The different levels of sourness/bitterness are measured on a scale called the pH scale.

So why is this important? Well, some things are too sour or too bitter for us to taste or use in certain ways. For example, if you want to make a cake, you need to use the right amount of sour and bitter ingredients. Too much or too little can make the cake taste bad or not rise properly. A pH meter helps us measure the exact amount of sourness/bitterness in different ingredients, so we can make sure to get it just right.