HW: The Periodic Table

Master the Periodic Table! Identify elements, families, and properties. Practice worksheet for chemistry students.

Fill in the blanks. Type the words with all lower case letters. Mendeleev arranged the periodic table by atomic mass, and Mosely arranged the periodic table by atomic number. Today, the periodic table is arranged by atomic number. Identifying Families: For the following, name the element and the family it is a part of (do not capitalize your answers):a. Period 4, Group 2 - element: calcium; family: alkaline earth metalsb. Period 2, Group 1 - element: lithium; family: alkali metalsc. Period 5, Group 18 - element: xenon; family: noble gasesd. Period 3, Group 17 - element: chlorine; family: halogens Identifying Metals, Metalloids, and Nonmetals Identify each element as a metal, metalloid, or nonmetal. Metal zinc aluminum lithium Metalloid germanium silicon Nonmetal fluorine oxygen phosphorus Which of the following are transition metals? magnesium titanium chromium aluminum mercury Which sublevel (block) do you find the alkaline earth metals? s p d f Match the following groups or elements with the correct characteristic. Calcium (Ca) 2+ Inner Transition Metals f-block Group 15 5 valence electrons Silver (Ag) 1+ Sulfur (S) 2- Transition Metals d-block elements Iron (Fe) MOM (Multiple Oxidation Metals) Alkali Metals React violently with water Sort the properties under the correct category. Metals Good conductors Malleable Ductile Lose electrons (Oxidized) Lustrous Nonmetals Most are gases at room temperature Gain electrons (Reduced) Share electrons in bonding Brittle as solids Metalloids Semiconductors Although hydrogen is a nonmetal, why is it placed above the alkali metals? Fill in the blanks. Use all lower case letters in the answers. A period is a row on the periodic table. A groups or familiesare columns on the periodic table.Valenceelectrons are electrons found in the outer most energy level of the electron cloud. Most atoms seek stability by seeking 8 valence electrons through gaining, losing or sharing electrons. This is known as the octetrule. In order to be stable, atoms need the same number of valence electrons as the nearest noble gas. There are a few exceptions. Hydrogen and helium are elements that achieve stability with only two valence electrons. Which of the following elements will have the same dot structure as shown below? Carbon Bromine Nitrogen Magnesium Germanium Sort the following characteristic or property under the correct element. Zinc (Zn) 2+ charge transition metal d-block element Potassium (K) 1 valence electron alkali metal s-block element 1+ charge Argon (Ar) 0 charge noble gas inert gas period 3 element Oxygen (O) 6 valence electrons 2- charge group 16 period 2 element Which transition metals are exceptions to the MOM rule? Cadmium (Cd) Gold (Au) Silver (Ag) Cobalt (Co) Zinc (Zn) Manganese (Mn) What do the "DOTS" surrounding the symbol in a Lewis dot structure represent?