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24 Cards in this Set

  • Front
  • Back
chemical formula
tells what elements a compound contains and the exact number of the atoms of each element in the unit of that compound 603
chemical bond
the force that holds atoms together in a compound 606
compound
substance formed from two or more elements in which the exact combination and proportion of elements is always the same
Section 1 Review
-elements of Group 18 (noble gases) rarely combine with other elements
Section 1 Review
-electron dot diagrams show the electrons in the outer energy level of an atom
Section 1 Review
-most atoms need eight electrons to complete their outer energy level
Section 1 Review
-atoms form chemical bonds in three separate different ways to complete their outer energy levels
atom
the smallest piece of matter that still retains the property of the element
ion
a charged particle that has either more or fewer electrons than protons 608
ionic bond
attraction formed between oppositely charged ions in an ionic compound 610
covalent bond
attraction formed between atoms when they share electrons 611
molecule
a neutral particle that forms as a result of electron sharing 611
polar molecule
a molecule with a slightly positive end and a slightly negative end as a result of electrons being shared unequally 614
nonpolar molecule
molecule that shares electrons equally and does not have oppositely charged ends 614
Section 2 Review
- an ionic compound is neutral because the sum of the ion charges is zero
Section 2 Review
- some atoms, like those in Group 4, share electrons instead of losing or gaining them
Section 2 Review
- covalent bonds can form single, double, or triple bonds
anion
a negatively charged ion
binary compound
compound that is composed of two elements 615
oxidation number
positive or negative number that indicates how many electrons an atom has gained, lost, or shared to become stable 615
polyatomic ion
positively or negatively charged, covalently bonded group of atoms 619
hydrate
compound that has water chemically attached to its ions and written into its chemical formula 620
Section 3 Review
- the net charge of a compound is zero
Section 3 Review
- Greek prefixes ar used to indicate how many atoms of each element are in a binary covalent compound