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from About.com Education

Easy To Use Chart of Periodic Table Trends

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A brief periodic table trends activity for high school and genchem college students to learn about the 5 trends of the periodic table: ionization energy, electron affinity, metallic character, atomic radius, and electronegativity.

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Radioactive Decay: is the process by which a nucleus of an unstable atom loses energy by emitting particles of ionizing radiation. A material that spontaneously emits this kind of radiation—which includes the emission of energetic alpha particles, beta particles, and gamma rays—is considered RADIOACTIVE.

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from Etsy

Quartz Celebration Orgone Energy Pyramid (Large)

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