Chemistry is a branch of physical science that studies the composition, structure, properties and change of matter.
Daily water consumption varies quite a bit. Season of the year, workload, reproductive status, diet, and climate factor into the volume of water needed by a particular horse on a specific day. As a starting point, the average horse drinks between 5 and 10 gallons (19 and 38 liters) of water each day. The horse may need slightly less if it is grazing lush pasture because fresh grass contains a high percentage of liquid.
This huge horse, at 6ft 71/2in from hoof to shoulder, is from Mount Pleasant, Texas. At 2,400lb, he has a giant appetite to match, putting away 20 gallons of water a day and 18lb of grain. As big as a small elephant, Big Cow Chilli and he's described as a gentle giant.