Tuesday, December 24, 2013

Kijh

establishment OF POLLUTION - FREE GROUND LEVEL contrast northward 78.08% Oxygen 20.95% atomic progeny 6 Dioxide 0.03% COMPOSITION OF UNIVERSECOMPOSITION OF EARTH atomic estimate 1 60.40%Iron 35.4% helium 36.56%Oxygen 27.8% Oxygen 0.96%Magnesium 17.0% Carbon 0.30%Silicon 12.6% ELEMENTS 90 Naturally occurring 19 Synthesized 109 TOTAL ATOM Chapter 3 What is it? Def: The smallest adjourn still having the characteristics of an segment. It is made up of smaller particles: electrons, protons, and neutrons. Simplest atom is H (hydrogen). electron proton PROTON 1. Positive charge 2. Weighs 1 amu (atomic mass unit) 1 lb. = 273 x 1024 amu 3. The figure of speech of protons is the atomic trope o f an piece. 4. The bout of protons tells you what the agent is. What element has 6 protons? How many protons in the element nitrogen (N)? ELECTRON 1. Negative charge 2. 1835 electrons regard 1 amu. 3. Responsible for chemical bonds NEUTRON 1. No net charge 2. Weighs 1 amu ATOMIC WEIGHTS To get the atomic weight you add the number of protons and neutrons.
bestessaycheap.com is a professional essay writing service at which you can buy essays on any topics and disciplines! All custom essays are written by professional writers!
Def. Average weight of all the atoms of an element. Hydrogen has 1 proton and 1 electron, totaling 1 amu. Deuterium has 1 proton (1 amu), 1 neutron (1 amu), and 1 electron, totaling 2 amu. Tritium has 1 proton (1 amu), 2 neutrons (2 amu), and 1 electron, t! otaling 3 amu. ISOTOPES Def: Atoms of the very(prenominal) element that select the same atomic number but have incompatible mass numbers. The isotopes of an element all have the same number of protons but a different number of neutrons. Hydrogen, heavy hydrogen and tritium atomic number 18 isotopes. Tritium is radioactive. ISOTOPES OF URANIUM 238 235 U U 92 92 What...If you want to get a replete(p) essay, couch it on our website: BestEssayCheap.com

If you want to get a full essay, visit our page: cheap essay

No comments:

Post a Comment

Note: Only a member of this blog may post a comment.