d 2 20 e 2 1 5 4 3 f 15 g 40 h 3 5 2 4 3 1 i 2 j 20 3 5 2 1 4 4 k l 6 1 4 3 2 5 The numbers in the upper-right corner of each cluster match the clues given on the previous page. Here are the atomic numbers and symbols and clues for the 12 entries. a 12 Mg A but tough metal, sometimes used in flares. b 1 H The most common element in a star. c 30 Zn The first metal to have both its and subshells filled in its ground state. 3d 4s d 2 He The second-most common element in a star. e 20 Ca This group-2 metal is predominant in quick lime, lime water, and limestone. f 15 P Besides oxygen and carbon, a key element in the backbone spirals of DNA. g 40 Zr In a periodic this element occupies period 5, group 4 h 3 Li This alkali metal has the strongest drive to be oxidized, measured by Eox values. i 2 He Its boiling point is a very cold 4.1 K. j 20 Ca This carbonate salt has a molar mass of 100. k 4 Be The one element in the alkaline-earth group that is a true metal. not l 6 C Graphite is one of the allotropes of this element. Next-Generation Science Standards (NGSS) Correlations Article NGSS How is Toxic? Crosscutting Concepts: Scale, proportion, and quantity Science and Engineering Practices: Developing and using models mathematics and computational thinking
d 2 2 1 20 e 5 4 3 f 15 5 g 40 2 4 h 3 3 1 3 5 i 2 2 1 j 20 4 k 4 1 4 l 6 3 2 5 The numbers in the upper-right corner of each cluster match the clues given on the previous page. Here are the atomic numbers and symbols and clues for the 12 entries. a 12 Mg A but tough metal, sometimes used in flares. b 1 H The most common element in a star. c 30 Zn The first metal to have both its 3d and 4s subshells filled in its ground state. d 2 He The second-most common element in a star. e 20 Ca This group-2 metal is predominant in quick lime, lime water, and limestone. f 15 P Besides oxygen and carbon, a key element in the backbone spirals of DNA. g 40 Zr In a periodic this element occupies period 5, group 4 h 3 Li This alkali metal has the strongest drive to be oxidized, measured by Eox values. i 2 He Its boiling point is a very cold 4.1 K. j 20 Ca This carbonate salt has a molar mass of 100. k 4 Be The one element in the alkaline-earth group that is not a true metal. l 6 C Graphite is one of the allotropes of this element. Next-Generation Science Standards (NGSS) Correlations Article NGSS How is Toxic? Crosscutting Concepts: Scale, proportion, and quantity Science and Engineering Practices: Developing and using models mathematics and computational thinking
chemmatters-tg-dec2014.docx