This starts to form hydrogen bonds with water in what is called gelatinisation. Every time I see someone answering this question with “because it is too large” a part of me dies, seriously. Log in to reply to the answers Post; Peter Boiter Woods. 1 decade ago. The previous answer is correct, it shrinks due to the loss of air. A chemist would say that the flour is suspended in the water. If they dissolve quickly, try adding more of each substance to see how much you can dissolve! When a substance dissolves in water, you can’t see it anymore, it’s still there, but has mixed with the water to make a transparent liquid called a solution. 0 0 1. When you mix tapioca flour and water together, the product has a quicksand-like property. Salt, for example, will dissolve quicker in hot water than in cold water. Which materials dissolve in water? We say they have dissolved. As stated, flour does not dissolve in water to any extent. The Science Behind The Dissolving Science Experiment. This is because flour does not dissolve in water. When you dissolve something in water, it is called a solution. Over time, the flour will slowly settle toward the bottom of the beaker. Substances that do not dissolve in water are called insoluble. Starch consists of two polymers, amylose and amylopectin. Lv 7. As a result, a mixture of flour and water has a cloudy white appearance. Some materials seem to disappear when added to water. The water is absorbed by the flour to explain the loss of volume. Hard if you are to punch it, but liquid-like when you slowly put the tip of your fingers in. In this process, water is acting as a plasticiser. Heat can help some substances dissolve faster in water. Sugar and salt are examples of soluble substances. When you mix sand or flour with water, they do not dissolve. Flour doesnt dissolve in water, it forms a suspension- If something dissolves, it forms a clear solution. Flour does not mix well with water. The substance that dissolves is called the solute and the water or other substance you dissolve it into is called the solvent. 0 0 1. Mixing one part water to two parts flour produces a paste that can be used for paper mache projects or even in place of glue. We call substances that dissolve in water soluble. Adding 2 tablespoons of flour to 1/4 cup of cold water produces a thickener that increases the density of sauces, stews or gravies.