The Learning Company Achieve! Math & Science Grades 1-3 (381933) for PC, Mac "protons atoms" Questions

...protons organized? Atoms are the basic building blocks of everything around us. They come in different kinds, called elements, but each atom shares certain characteristics in common. All atoms have a ...

put these from smallest to largest: Crystal, Proton, Molecule, Neutron, electron, Atom electron proton neutron atom molecule crystal

...protons in the nucleus of an atom is labeled Z. Atoms with the same Z (istotopes) have the same chemical properties. So you cannot differentiate between them on the basis of their chemical properties ...