Gina Andrews Science Chapter 10
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Created by:
lfrancoeur on March 18, 2011
Classes:
Y.A.L.E. Faculty Editors, YALE Students
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11 terms
Terms | Definitions |
|---|---|
 chemical symbol | A shorthand way to write the name of an element; for example, C for carbon, Ag for silver |
| nucleus | The positively charged center of an atom that contains protons and neutrons |
| electron | Negatively charged particle that moves around the nucleus of an atom |
| proton | Atomic particle with a positive charge that is part of an atom's nucleus |
| neutron | Neutrally charged particles |
| atomic number | The number of protons in an atom's nucleus |
| electron cloud | Region where electrons most probably are found surrounding the nucleus of an atom |
| quark | A very small particle of matter that makes up protons and neutrons; presently, six different types of quarks are known |
| Mass number | The sum of the number of protons and neutrons in the nucleus of an atom |
| Isotope | An atom of the same element with a different number of neutrons, like boron-10 and boron-11 |
| Average atomic mass | The average mass of an element is the average mass of a mixture of its isotopes |
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