Sophia Learning
Sophia: Introduction to Acids and Bases
Created to teach students of the 21st century, SOPHIA is bringing acids and bases straight to your fingertips. Become the commander of your own learning experiences as you take part in this interactive lesson.
BBC
Bbc: Gcse Bitesize: Types of Chemical Reactions
Bases are substances that can react with acids and neutralize them. Alkalis are bases that are soluble in water. The pH scale measures how acidic or alkaline a substance is. Substances with a pH lower than 7 are acidic, those with a pH...