Most abundant of chemical elementsHydrogen Lowest boiling pointHelium Lightest metalLithium Mixed with copper for a strong alloyBeryllium Popular for making fiberglassBoron The composition of diamondsCarbon Makes up most of our airNitrogen What animals breatheOxygen Most reactive elementFlourine Used in decorative signsNeon Common in saltSodium Common in fireworks and flash bulbsMagnesium Made from bauxite oreAluminum Common in semiconductor technologySilicon Used by magiciansPhosphorus Yellow crystals melt red and burn blueSulfur Cleans poolsChlorine Used in weldingArgon Lithium only lighter metalPotassium Contrubutes to bone strengthCalcium Before discovery called ekaboronScandium Refined through Kroll processTitanium Used in surgical steelVanadium Makes rubies redChromium Used by glassmakers for clarityManganese Makes Mars redIron Makes glass blueCobalt Chinese called it White CopperNickel Popular heat and electrical conductorCopper Known to ancients as spelterZinc Melts in handGallium Common semiconductor in transistorsGermanium Notorious poisonArsenic Replaced lead in brassSelenium Only room-temperature liquid nonmetalBromine Once used to define MeterKrypton Makes fireworks purpleRubidium Prevents X-rays from TVStrontium Lets TV's make redYttrium A diamond substituteZirconium Allows thinner corrective lensesNiobium Is lead-likeMolybdenum light, radioactive metalTechnetium Makes platinum and titanium super strongRuthenium Means RoseRhodium In first Tuberculosis treatmentPalladium ArgentumSilver Most used in batteriesCadmium Plates high quality mirrorsIndium Babbit and pewter are alloysTin StibiumAntimony A rare chalcogenTellurium AntisepticIodine Reusable flash bulbs use thisXenon Gives time to atomic clocksCesium Greek name means heavyBarium Safer than Thorium for Tungsten weldingLanthanum Used in nuclear control rodsHafnium Safe in surgical componentsTantalum WolframTungsten Needed for lead-free, high octane gasolineRhenium Highest densityOsmium Not used in ball-point pensIridium Often mandatory in catalytic convertersPlatinum Most ductile and malleableGold HudragurumMercury 60Thallium Small pieces float in waterLead 60Bismuth 70Polonium 70Astatine 70Radon 70Francium 70Radium 70Actinium 70Rutherfordium 70Dubnium 70Seaborgium 70Bohrium 80Hassium 80Meitnerium 80Cerium 80Praseodymium 80Neodymium 80Promethium 80Samarium 80Europium 80Gadolinium 80Terbium 90Dysprosium 90Holmium 90Erbium 90Thulium 90Ytterbium 90Lutetium 90Thorium 90Protactinium 90Uranium 90Neptunium 100Plutonium 100Americium 100Curium 100Berkelium 100Californium 100Einsteinium 100Fermium 100Mendelevium 100Nobelium 100Lawrencium