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KMHS_Chemistry
Chapter 5 Vocabulary: Chemical Names and Formulas
| Question | Answer |
|---|---|
| anion | any atom or group of atoms with negative charge |
| binary compound | compound composed of two elements |
| cation | any atom or group of atoms with positive charge |
| chemical formula | a short hand method used to show the number and type of atoms present in the smallest representative unit of substances |
| formula unit | the lowest whole number ratio of ions in an ionic compound |
| group | a vertical column of elements in the periodic table |
| ion | an atom or group of atoms that has a positive or negative charge |
| ionic compound | a compound composed of positive and negative ions |
| law of definite proportions | in any chemical compound the elements are always combined in the same proportions by mass |
| law of multiple proportions | whenever two elements form more than one compound the different masses of one element that combine with the same mass of the other element are in the ratio of small numbers |
| metal | one of a class of elements that includes the large majority of the known elements |
| metalloid | one of the class of elements having the properties of both metals and non-metals |
| molecule | a neutral chemically bonded group of atoms that act as a unit |
| molecular compound | a compound that is composed of molecules |
| molecular formula | a chemical formula that shows the actual number and kinds of atoms present in a molecule of a compound` |
| non-metal | one of the class of elements that are not lustrious and are generally poor conductives of heat and electricity |
| periodic table | an arrangement of elements in two rows and columns according to similaritie in their properties |
| polyatomic ion | a tightly bound group of atoms that behaves as the unit and carries a charge |
| representive element | an element that belongs to an A group on the periodic table |
| terinary compound | a compound containing atoms of three different elements with one or more polyatomic ions usually present |
| transition metal | an element found in one of the B groups on the periodic table |
Created by:
KellyBeck
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