• • •  Non-metal, halogen family, atomic mass 35 Chlorine  25 electrons, transition element Manganese  Gas, 48 neutrons Krypton

• • •  Period 2, atomic mass 11 Boron  Nonmetallic, period 3, atomic mass 32 Sulfur  26 protons, period 4, transition element Iron

• • •  12 neutrons, metallic, 11 electrons Sodium  29 electrons, period 4 Copper  Atomic mass 20, gas Neon

• • •  Period 5, transition element, 51 neutrons Zirconium  80 electrons, transition element Mercury  Period 4, lowest mass on periodic tables Potassium

• • •  Metallic, period 4, 20 electrons Calcium  Period 6, gas, 86 proton Radon  4 neutrons, metallic Lithium

• • •  Period 4, metallic, 27 electrons Cobalt  Metallic, period 6, 56 protons Barium  Gas, atomic mass 16, 8 neutrons Oxygen

• •  Mass less than 30, not neon, noble gas Helium  Period 5, metallic, 38 electrons Strontium

• • Vertical columns in the period table • Families Elements in families have similar _________ • Properties

• • Family of “salt-producing” elements like the non-metal in table salt • Halogens Family in Group 18 on periodic table • Noble Gas

• • Horizontal rows on the periodic table • Periods Each elements in a period is in a ______ group • Different

• • Elements on the left side of the periodic table • Metals Elements on the ride side of the periodic table • Non-metals

• • Elements in Groups 3-12 on the periodic table • Transitions Most widely used metal • Iron

• • Only liquid metal at room temperature • Mercury Most abundant element in Earth’s crust • Aluminum

• • Odorless, tasteless, colorless gas; lightest of all elements • Hydrogen Second most abundant element in Earth’s crust; found in glass and sand • Silicon

• • Gas element safe to use in balloons to make them float • Helium Element contained in 80% of known compounds • Carbon