Name that Family!

2 Highly reactive Nonmetals Diatomic in elemental form Form -1 ions; 7 valence electrons Prevent tooth decay, turn stains clear, disinfection, thyroid health

3 Reactive Nonmetal and semimetals Form +3 ions; 5 valence electrons Most abundant metal in Earth’s crust –refining this element uses 5% of country’s electricity –Used in cans, airplanes –Easily recycled

4 Reactive, but do not need to be stored in oil Soft metals Form +2 ions; 2 valence electrons Forms a hard white crust on its surface when it reacts with oxygen in the air – “oxidized”

5 Wide variety of properties Metals, semimetals, and nonmetals Share electrons, or form +4 or -4 ions; 4 valence electrons Form allotropes like graphite and diamond Semiconductors in computer technology

6 Typical metals: –Malleable –Ductile –Conduct heat and electricity –Mostly solids Varying charges; 2 valence electrons

7 Contains metal, nonmetal, and semimetals One element is 78% of the Earth’s atmosphere. One element is found in matches. Two elements are found in DNA Form -3 ions; 5 valence electrons; can share electrons

8 Soft, silver metals Extremely reactive So reactive with water that they need to be stored in oil Form +1 ions; 1 valence electron

9 Unreactive Gases Do not form ions 8 valence electrons Larger elements in this family can form compounds, but only in a lab.

10 Mostly nonmetals; some semimetals Form -2 ions or share electrons 6 valence electrons One element is the most abundant on Earth. One element is found in solar power devices and copy machines.