What does it mean for a solution to be acidic or basic (alkaline)?
It all has to do with hydrogen ions (abbreviated with the chemical symbol H+). In water (H2O), a small number of the molecules dissociate (split up). Some of the water molecules lose a hydrogen and become hydroxyl ions (OH?). The “lost” hydrogen ions [...]

Difficulty Level:

Objective
The goal of this project is to make your own pH indicator paper, and use it to measure the acidity and alkanity of various solutions from around your house.
Introduction
Acidity and alkalinity are measured with a logarithmic scale called pH. Here’s why: A strongly acidic solution can have one hundred million million (100,000,000,000,000) times more [...]