Chemistry 1: Classification of Elements Worksheet



Classify each element as a metal, non-metal or metalloid based on it’s position on the Periodic Table. Also state the group/family it is in. Classifications: Metal (M) Non-Metal (NM) Metalloid (MO)Groups: halogen * transition metal * alkali metal * alkaline earth metal * noble gas * non-metal * other metalNiobium ___________________Radon ____________________Radium ______________________Nitrogen___________________Silver _____________________Bismuth _____________________Iodine _____________________Neon _____________________Lithium ______________________Osmium ___________________Silicon ____________________Antimony ____________________Bromine __________________Sulfur ____________________Lead ________________________Uranium __________________Rubidium _________________Calcium ______________________Each numbered exercise contains element clues that will help you fill-in the blanks to figure out the missing word. Use the symbol for each element in each blank.1. _________ _________ _________Transition Metal number 24A halogen with 53 protonsFirst element in family 132. _________ _________ _________An active alkaline earth metal with 56 protonsThe alkali metal of period 3The metal element that makes up table salt 3. _________ _________ _________The first of the alkali metalsThe first element of family 16A period 2 nonmetal with 5 valence electrons 6. Explain why chlorine (Cl) is very reactive, and why argon (Ar), is unreactive.7.Why are valence electrons important to the Periodic Table?8.Explain the difference between the Mass Number and the Atomic Mass for an element.4. _________ _________ _________The first element in the actinide seriesPeriod 2 nonmetal with 6 valence electronsThe last of the noble gases 5. _________ _________ _________ _________A transition metal with atomic mass of 183.8,used in incandescent light bulbs.Period 4, Group 15 elementThe second element in Group 15Period 3 element with 6 valence electrons ................
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