Everything is made of tiny particles called ____. Each element in the ____ table is made of a ____ type of atom. All of the atoms in an element are the ____.The centre of an atom is called a ____. The nucleus contains ____ and ____. The protons have a ____ charge and the neutrons have ____ charge. Atoms also contain electrons which are found in shells outside of the atom. The electrons have a ____ charge. The first shell can hold a maximum of ____ electrons and the second and third shells can hold up to ____ electrons.

Structure of the Atom

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