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Polymers come in many sizes and shapes.
They can be as hard and inflexible such as plumbing piping or as flexible as plastic wrap. All of these activities are polymers and are non-Newtonian liquids. Non-Newtonian means that if you jerk any of these substances, they break instead of stretch. Oobleck This simple polymer is made with starch and water. Starch is a natural polymer and water acts as a crosslinking agent.