The document discusses elements and the periodic table. It provides information on the names of elements, their symbols, atomic mass and number. It explains that the periodic table is organized into rows and columns, with elements identified by their symbol and atomic properties. Key chemical families are also outlined, including alkali metals, alkaline earth metals, halogens and noble gases. Cations and anions are defined as ions with positive and negative charges respectively.

6. Symbol Atomic Mass Atomic Number Charge (if ion)

7. H Hydrogen 1 1 Protons: 1 Neutrons: 0 Electrons: 1

8. Na Sodium 23 11 Protons: 11 Neutrons: 12 Electrons: 11

15. Metal: Elements that are usually solids at room temperature. Most elements are metals. Non-Metal: Elements in the upper right corner of the periodic Table. Their chemical and physical properties are different from metals. Metalloid: Elements that lie on a diagonal line between the Metals and non-metals. Their chemical and physical properties are intermediate between the two.

18. What would the charge be on a sodium ion? EXAMPLE Since sodium in in Group IA it is a metal and so would LOSE an electron You can tell how many would be lost by the group number Group 1A elements lose 1 electron So the charge would be +1 Remember an electron is negatively charged. When you lose them atom becomes positively charged… when you gain them it becomes negatively charged

19. How would you right the symbol for the sodium CATION? EXAMPLE Na +1 How many outer electrons does sodium have before it loses one? It has 1…remember the group number!