Chapter 3 Atoms and Elements Do these steps on the front of the worksheet Element Identities. Atomic Particles Particle Charge Mass # Location Electron -1 Atomic Structure Walk Around Move and label the protons, neutrons, and electrons to build an atom of each of the following elements. Building...
Example: Sodium (Na) Pictures show all the electrons in a sodium atom Pictures show all the electrons in a sodium atom Neutral Sodium has 11 protons (p+) and 11 electrons (e-) Neutral Sodium has 11 protons (p+) and 11 electrons (e-) First layer fills up with 2 electrons - 9 left...
Put a different element name on each card, along with its symbol, number of protons and number of electrons. Metals on 1 colour, others on other What makes. ELECTRONS!!! Parts of an atom. Electrons Negative charge Located outside the nucleus in an electron cloud They are organized into sh...
The Halogens (Group 7) Fluorine, Chlorine, Bromine, Iodine, Astatine. Have 7 valence electrons (very reactive), they need 1 more to have a full valence! The Noble Gases (Group 8) Very stable and “unreactive” (inert). All have 8 valence e- except for Helium. Why is Helium still c...