ph scale

acid acidity acids alkaline alkalinity ammonia analytical baking base basicity battery biochemical biochemistry biological biology black bleach bleaches chemical chemistry classification classify cleaner coffee concentration concentrations dry environment environmental food high hydrogen hydronium indicator ion ionic ions juice lab laboratory lemon liquid low magnesia measure measurement measuring medicine meter milk natural nature neutral orange oven ph research scale science sciences scientific sea soap soapy soda solution solutions substance substances system systematic technological technology test tests tomato value values vinegar water