Is buttermilk biscuits a chemical change?

Yes, buttermilk biscuits are a chemical change because the ingredients undergo a chemical reaction when mixed together and heated. The baking powder, a chemical leavening agent, reacts with the liquid ingredients to produce carbon dioxide gas, which causes the biscuits to rise. The heat from the oven causes the starches in the flour to gelatinize and the proteins to coagulate, giving the biscuits their structure and texture. The chemical changes that occur during the baking process result in the formation of new substances with different properties than the original ingredients.