Which nutrient do you prepare with powder of starch in hot water and powder of glucose in cold water

Let's clarify this.

• Starch is prepared with powder in hot water. Starch is a complex carbohydrate (a polysaccharide). In cold water, it forms a suspension, but in hot water, the starch granules swell and burst, releasing amylose and amylopectin, which forms a viscous colloidal solution or gel (a process called gelatinization). This makes it easier to mix and use for experiments or consumption.

• Glucose is prepared with powder in cold water. Glucose is a simple sugar (a monosaccharide). It is highly soluble in water, and dissolves readily in cold water to form a clear solution. There's no need for hot water to dissolve glucose.