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scientists use various types of models to represent real world activity. for instance, computer models are used to predict
weather patterns, and the physical models of thomson and rutherford have been used to us understand the structure of the

stupid i wont let you get a chance

explanation:

ca has a crystalline lattice with positive ions (since it is a metal, metals are positively charged) and electrons flow freely in its structure since the ca atoms have a large nuclear radius so the electrons are not tightly held, therefore the electrons can flow freely since they are not being highly attracted by the nucleus. moreover, one of the properties of metals are that they are conductors of electricity, thus proving ca is the element.