Atoms-ICS16SPI

**Define the following words:**

 * Atom - tiny particles that are far too small to see


 * Proton - positively charged particles found within atomic nuclei

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 * Neutron - uncharged particles found within atomic nuclei


 * Electron - negatively charged particles that surround the atom's nucleus

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 * Nucleus - the central and most important part of an object, movement, or group, forming the basis for its activity and growth


 * Atomic Number - number of protons in an atom of an element


 * Atomic Weight - measurement of the total number of particles in an atom's nucleus

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 * Atomic Symbol - abbreviation for an element that can represent it in a report, equation, compound, or the like.

Chlorine

 * Symbol - CI


 * Atomic Number - 17


 * Atomic Weigh - 35.453

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 * What it combine to - sodium and chlorine combine, they form a non-reactive substance called sodium chloride
 * Properties
 * Chemical - All elements except the noble gases. The noble gases are the elements that make up Group 18 of the periodic table.
 * Physical - Dense gas with a density of 3.21 grams per liter. By comparison, the density of air is 1.29 grams per liter. Chlorine changes from a gas into a liquid at a temperature of -34.05°C and from a liquid to a solid at -101.00°C


 * Electronic Configuration - Ne 3s2 3p5