Are the basic units of matter, consisting of smaller particles (protons, neutrons, and electrons). and neutrons reside in the nucleus, which is the central part of the atom. carry a positive charge, and the neutrons are carry a negative charge and they orbit around the nucleus.

blank 1 - molecules, atoms, or tissues
blank 2 - tissues, electrons, or protons
blank 3 - protons, electrons, or neutrons
blank 4 - negative, neutral, or positive
blank 5 - protons, electrons, or neutrons