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ChemistryTA11

Chemistry Sem. 2 final

QuestionAnswer
Ionic Compound compound composed of negative and positive ions
ionic bond electrostatic attraction that binds oppositely charged ions together
polyatomic ion tightly bonded group of atoms that behaves as a unit and has a positive or negative charge
polar molecule one side of the molecule is slightly negative and one side is slight positive
double covalent bond a bond in which two atoms share two pairs of electrons
electron dot structure (Lewis dot structure) notation that depicts valence electrons as dots around the atomic symbol of the element; symbol represents inner electrons and atomic nucleus
hydrogen bond attractive forces in which a H covalently bonded to a very electronegative atom is also weakly bonded to an unshared e- pair of another electronegative atom
resonance structure 1 of 2 or more equally valid e- dot structures of a molecule or a polyatomic atom
triple covalent bond 3 pairs of e- are shared by 2 atoms
lone pair (unshared pair) pair of valence e- that isn't shared between atoms
VESPR valence shell electron pair repulsion; because e- pairs repel, molecules adjust to their shapes so that valence e- pairs are as far apart as possible
structural formuala chemical formula that shows the arrangement of atoms in a molecule or a polyatomic ions
polar covalent bond covalent bond between atoms in which e- are shared unequally
metallic bond force of attraction that holds metals together
molecule (molecular compound) neutral group of atoms joined by covalent bonds
chemical formula expression that indicates the number and type of atoms present in the smallest representative unit of a substance
coordinate covalent bond one atom contributes both bonding electrons
non-polar covalent bonds e- are shared equally by the 2 atoms
single covalent bond formed when 2 atoms share a pair of electrons
molecular formula chemical formula of a molecular compound that shows the kinds and numbers of atoms present in a molecule of a compound
covalent bond formed by the sharing of electron between atoms
formula unit lowest whole number ratio of ions in an ionic compound
diatomic molecule molecule consisting of 2 atoms
alloy mixture consisting of 2 or more elements; at least one is a metal
How do ionic compounds form? Electrons are transferred from one thing to another, when the ions get closer together, they will stick.
Describe the structure of an ionic compound. they are made of anions(usually nonmetals) and cations (metals) and held together by ionic bonds
List several properties of ionic compounds solid crystals at room temperature, strong electrostatic forces between ions, and dissolve in water and conduct electricity when dissolved in H2O
Describe the structure of a metallic substance held on loosely because of a sea of electrons
List the 7 diatomic elements. h2 (Hydrogen), O2(Oxygen) N2(Nitrogen), Cl2 (chlorine), Br2 (Bromine), I2 (Iodine), F2 (Fluorine)
Created by: mellyb13
 

 



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