The positively charged particle of an atom is called a(n)

Although the diagram is not shown, i know that the convection is heated by a the core.

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

Polyethylene is a strong synthetic polymer that can be used to make toys and bottles. this makes plastics which are important also to people but sometimes it lead to harmful environmental effects such as global warming if these plastics are burned.