Explain what the term "partially positive" means and explain why an atom might be partially positive when it bonds covalently. (what makes is partially postive

In this case, the more electronegative atom gains a partial negative charge, while the less electronegative atom becomes partially positive. These types of covalent bonds are called polar bonds because the electron distribution or charge is unevenly distributed or polarized. Hope this helps :)

Both models are effective because they show the valence electrons, and these valence electrons indicate the reactivity of an element.

The answers are 3.c kelvin4.b liquids only