Indicators are substances that change colour when they are added to acidic or alkaline solutions. Universal indicator is the indicator most commonly used in the laboratory. If universal indicator is ...

Scientists use a scale called the pH scale to measure how acidic or basic something is. The scale runs from 0 to 14. Where 0 is the most acidic and 14 is the most basic. Around the middle we have ...

This demonstration provides a clear, visual introduction to one of the important consequences of increasing atmospheric carbon dioxide concentrations on seawater, called ocean acidification. 1. Add ...

Stimuli-responsive gels have been actively studied and applied to a variety of devices such as drug carriers, artificial muscles and actuators. In this research study, calcium alginate gels containing ...