The pH scale measures how acidic or alkaline a solution is. It ranges between 0 and 14. Acids have a pH of less than 7. Alkalis ( or bases ) have a pH of over 7. pH 7 is neutral. pH is measured using ...

Students will be able to explain that if two substances cause turn a pH indicator different colors, they must be different substances. Students will be able to explain that the color that a substance ...

Red cabbage indicator is a simple way to tell whether a substance is an acid or alkali. Acids can be found in the food we eat, in our bodies and around the home. Some acids, especially those found in ...