Several soil characteristics can be readily tested or examined, and are used to differentiate soil types. (9)_________________ can hold clues to the composition and/or the formation process of that soil. (10)__________________ refers to the particle size (or distribution of sizes) that make up a soil. Soil texture is a property that you can (11)_____________, and your fingers can help in the analysis. An important aspect of soil chemistry is soil’s departure from neutrality toward (12)________________or (13)______________ Levels of acidity or alkalinity are measured on the pH scale of 0 to 14. Low pH values indicate an acid soil, and high pH indicates alkaline conditions. Scientists use (14)___________________ to evaluate how well soil functions since soil function often cannot be directly measured. Soil indicators include chemical indicators, physical indicators and _____________________ indicators.​