The term for when hard biscuits become soft due to exposure to air or moisture is called "staling." Staling is a complex process involving the migration of moisture from the air into the biscuit, which causes the starch molecules in the biscuit to recrystallize and lose their crispness. This process is accelerated by the presence of unsaturated fats in the biscuit, which can react with oxygen in the air to form rancid compounds.
Biscuits go soft, but cakes go hard. This is because biscuits have less moisture, than the air, so they absord moisture and go soggy. Cake's have more moisture than the air, so they release moisture, and go hard.
Biscuits go soft when they go stale because they contain less moisture than the atmospere, so they absorb it. Cakes, because they contain more moisture than the atmospere, go hard because they release moisture.
Brown sugar can become hard due to exposure to air, which causes it to lose moisture and become dry. This can happen if the sugar is not stored properly in an airtight container.
Biscuit contains high content of Starch, bread do not, Starch is humidity sensitive and attract humidity from air. Biscuit made with starch to be able to absorb liquids in it, bread do not. Hope this will help, Thanks for asking.
When bread is heated in the microwave, the moisture inside the bread evaporates quickly, causing the bread to lose its moisture and become hard.
Hard tack was hard biscuits that travelers and soldiers used for food.
rock hard biscuits
They get hard.
They ate hard biscuits and rice
Jaffa Cakes are cakes because they go hard when they are stale where as biscuits go soft. this has been proven on tv shows such as Qi
Soil becomes hard and dry due to factors such as lack of moisture, compaction from heavy machinery or foot traffic, and excessive exposure to sun and wind. When soil becomes compacted, air and water cannot penetrate easily, leading to hardening and drying out. This can hinder plant growth and reduce the soil's ability to support healthy vegetation.
Scones are more of a cake with raisins in that people normally put jam and cream in where as biscuits are hard and sometimes people dunk them in tea...