ENVS 2270 Lecture Notes - Lecture 5: Carbon-12, Radiocarbon Dating, Uranium-238
15 Feb 2017
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Established by unep and wmo: (cid:862)re(cid:448)ie(cid:449)s a(cid:374)d assesses the (cid:373)ost rece(cid:374)t scie(cid:374)tific, tech(cid:374)ical a(cid:374)d socio-economic information produced worldwide relevant to the understanding of climate change. It does not conduct any research nor does it monitor climate related data or para(cid:373)eters(cid:863) Produces reports- 5 comprehensive assessment reports: occasionally release additional reports. The atom is the smallest identifiable unit of an element. The atom has a nucleus (protons and neutrons) surrounded by electrons: protons are positive and have mass, neutrons have no charge and have mass, electrons are negative and have very little mass. Elements combine to form compounds: ex: the compound co2 is made up of one atom of carbon and two atoms of oxygen. Every atom of a particular element has the same number of protons: number of protons = atomic number, atomic numbers can be found on the periodic table.
