OCS 1005 : OCS 1005 Exam 2 SQUIRREL
15 Mar 2019
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Document Summary
*atoms- a unit of matter, the smallest unit of an element, having all the characteristics of that element and consisting of a dense, central positively charged nucleus surrounded by a system of electrons. *nucleus- positively charged central portion of an atom, composed of protons and neutrons and containing almost all the mass of the atom. *protons- positively charged subatomic particle found in the nucleus of atoms that has a mass about equivalent to that of a neutron. *neutrons- electrically neutral subatomic particle found in the nucleus of atoms that has a about the same of that as a proton. *electrons- subatomic particle that orbits the nucleus of an atom and has a negative charge: the water molecule. *molecule- group of two or more atoms bound together by ionic or covalent bonds. *covalent bonds- chemical bond formed by the sharing of one or more electrons, especially pairs of electrons between atoms.
