The pH scale that is widely accepted and used by scientists didn't actually exist until 1909. Before then scientists had to rely on using adjectives to describe the acidity or basicity of a substance ...

Fall testing is ideal because it gives you plenty of time to get results back from the lab and to begin improving your soil before planting.

This article was published in Scientific American’s former blog network and reflects the views of the author, not necessarily those of Scientific American I remember learning about acids and bases (or ...

The Danish chemist was the head of Carlsberg Laboratory at the time of the scale's creation, and died in 1939 at 71 years old. Jennifer Bisset was a senior editor for CNET. She covered film and TV ...

Purdue Extension Educators frequently encourage homeowners to get soil tests when they want to grow new plants in an area, or try to diagnose what’s wrong with plants currently growing. One key ...

Note: This video is designed to help the teacher better understand the lesson and is NOT intended to be shown to students. It includes observations and conclusions that students are meant to make on ...

The pH of yogurt is typically around 4.6, which makes this food more acidic. But this measurement can vary depending on the length of the fermentation process.