They might show up as slightly acidic or slightly alkaline because ... give an approximate pH value for a solution by comparing the colour of the indicator to the colour chart below.

The pH scale goes from 0 to 14 with pH 7 as the neutral point. As the amount of hydrogen ions in the soil increases the soil pH decreases thus becoming more acidic. From pH 7 to 0 the soil is ...

Did you know that consuming too many acidic foods and liquids can lead to health problems? But how do you know if what you’re ...

Substances that are alkaline are basic, or the opposite of acidic — they have a high pH, while acids have a low pH. Lower pH levels reflect a higher quantity of positively charged particles.