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ScienceTermsChapter3
Science Terms Chapter 3
Term | Definition |
---|---|
Chemical Formula | Symbols that show the elements in a compound and their ratios |
Chemical Name | Name of a compound that indicates the elements in it |
Covalent Compound | Compounds such as water, in which two atoms share a pair of electrons |
Endothermic | Characterized by an overall absorption of energy; used to describe a chemical reaction. The prefix "Endo" means entering |
Exothermic | Characterized by the release of heat, light, and sound through electrical or other means; used to describe a chemical reaction. The prefix "Exo" means leaving |
Ionic Compound | Compounds, such as table salt, in which oppositely charged ions come together because of mutual attraction |
Ionic Lattice | Repeating pattern of positive and negative ions forming an ionic compound |
Molecule | A group of atoms in which the atoms are bound together by the sharing of one or more pairs of electrons |
Multivalent Metal | Metals that can form an ion in more than one way, resulting in ions with different charges. The prefix "multi-" means many |
Polyatomic Ion | A molecular ion composed of more than one type of atoms joined by covalent bonds. The prefix "poly-" means many |
Roman Numeral | Numerals based on those used by the ancient Romans |