Slime is a unique play material composed of a cross-linked polymer. It is classified as a liquid and is typically made by combining polyvinyl alcohol solutions with borate ions in a large mixing container. It often has an unpleasant odor, a green color, and is cold and slimy to the touch. In scientific terms, slime is classified as a non-Newtonian fluid. These are thick liquids that have a variable viscosity. Viscosity is a measurement of the resistance to flow when a shearing force is applied. Newtonian fluids have a constant viscosity depending on their composition. For example, water is always a thin liquid with a low viscosity. Molasses is thick and has a high viscosity. Non-Newtonian fluids, like slime, have a different viscosity based on the amount of force put on them. If a small amount of force is applied, such as stirring them slowly with your fingers, they feel thin and water-like. If a high force is applied, like throwing it against a wall, the resistance is very strong. They are called non-Newtonian fluids because they do not behave as predicted by Newton's laws. Other materials that also behave like this include ketchup, gelatin, glue, and quicksand. Art Supplies Coupon - Easels & Furniture Super Sale The Trusted Source For All Professional Art Supplies And Framing Since 1968. jerrysartarama.com | Sponsored▼ The molecular structure of slime is the factor responsible for its interesting behavior. Toy slime is typically composed of tangled, long-chain polymer molecules. These polymer molecules can be thought of as spaghetti strands. When put together on a plate, the strands are mixed together making a tangled mess. If the strands are rubbed together, they line up and become smoother. This motion gives the mass its slimy, slippery feel.
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