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What Chemical Weathering Reaction Is Potentially Harmful To The Environment

What are the chemical properties of beryllium?

Boring Stuff:
Atomic weight: 9.012
Melting point 1278 degrees Celsius
Boiling oint 2970 degrees C
Density 1.8 kg/L
Has no stable isotopes.
Soluble in all acids except nitric acid.

Is the 47th most abundant elemnt and considered a rare metal.


Medical Stuff:
If beryllium dust is breatehd in, they cause chronic inflamation of the lungs and shortge of breath. Brief exposure to beryllium is caused berylliosis.
It's carcinogenic.

War History:
Beryllium does not absorb nuetrons and reflects some of them, and it's used in nuclear weapons and in teh nuclear energy industry.

Economic.\:
Wehn copper and nickel are laloyed with Be, they become much better at conducting electricity.
Beryllium is trasnparent ot Xrays, which is why it is used in windows for Xray Tubes.

Most reactions speed up as the reaction proceeds.?

False. As the reactants are used up it slows down.

Please tell me, in a brief paragraph or three, about the Gaia Theory / Hypothesis????

The Gaia hypothesis is an ecological hypothesis that proposes that living and nonliving parts of the earth are viewed as a complex interacting system that can be thought of as a single organism. Named after the Greek earth goddess, this hypothesis postulates that all living things have a regulatory effect on the Earth's environment that promotes life overall.

this was a quote from:
http://en.wikipedia.org/wiki/Gaia_hypothesis
check the link for the full answer
Alon