资讯

Understanding pH is crucial in many areas of life - from cooking and cleaning to understanding how our bodies work. It affects everything from the food we eat to the products we use for cleaning, and ...
While we’re busy worrying about calories and carbs, a microscopic chemistry experiment determines how ... works tirelessly to maintain different pH levels in different areas, with your blood ...
Independent variable - pH level Dependent variable - Time taken for starch to be broken down. Control variables - Temperature, volume and concentrations of enzyme solution and starch solution.