Reading...
Play button
Play button
Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
36 Cards in this Set
- Front
- Back
|
anion
|
An ion with a negative charge.
|
|
|
cation
|
An ion with a positive charge.
|
|
|
chemical bond
|
A strong attractive force between atoms.
|
|
|
covalent bond
|
A bond whose electrons are shared between atoms.
|
|
|
double covalent bond
|
A bond in which atoms share two pairs (four total) of electrons.
|
|
|
electronegativity
|
The ability of an atom to pull a bonding electron toward itself.
|
|
|
ion
|
An atom or group of atoms that has either gained or lost electrons and so has an electrical charge.
|
|
|
ionic bond
|
A bond in which one atom steals at least one electron from another atom in an attempt to fill its valence shell.
|
|
|
metallic bond
|
A bond that holds two metals together.
|
|
|
molecule
|
A grouping of at least two atoms.
|
|
|
polar covalent bond
|
A bond in which an atom with a higher electronegativity pulls the bonding electron toward itself, causing an unbalanced charge.
|
|
|
single covalent bond
|
A covalent bond in which electrons are shared between atoms.
|
|
|
triple covalent bond
|
A bond in which atoms share three pairs (six total) of electrons.
|
|
|
valence electron
|
An electron in the outermost shell of an atom.
|
|
|
Avogadro's number
|
6.022 x 10^23, the number of objects in one mole.
|
|
|
bonding pair
|
Two shared electrons in a covalent bond.
|
|
|
bond order
|
The number of bonding pairs of electrons in a covalent bond.
|
|
|
calorie
|
A unit of measurement of energy in food.
|
|
|
diatomic molecule
|
A molecule formed with exactly two atoms.
|
|
|
electron group
|
Any collection of one or more electrons that circles a central atom in a molecule.
|
|
|
electron-group geometry
|
The spatial arrangement of electron groups around the central atom.
|
|
|
endothermic reaction
|
A reaction in which heat must be added in order for the reaction to occur.
|
|
|
exothermic reaction
|
A reaction in which heat is given off.
|
|
|
hydrogen bonding
|
A process by which positively charged hydrogen atoms bond to other atoms' lone pairs.
|
|
|
Lewis dot structure
|
A sketch of a molecule that uses dots to represent electrons as they are configured in the molecule.
|
|
|
lone pair
|
Two electrons not involved in bonding.
|
|
|
mole
|
602,200,000,000,000,000,000,000 molecules of a substance. This number is called Avogadro's number.
|
|
|
octet rule
|
Each atom in a molecule should have eight valence-shell electrons.
|
|
|
binary covalent compound
|
A compound formed by two nonmetals in a shared covalent bond.
|
|
|
binary ionic compound
|
A compound formed by the bonding of one metal to one nonmetal.
|
|
|
chemical nomenclature
|
A systematic method of assigning names to chemical compounds.
|
|
|
monatomic ion
|
A charged ion formed from a single atom.
|
|
|
oxidation number
|
A theoretical charge a molecule would have if each pair of bonded electrons belonged solely to the more electronegative atom.
|
|
|
oxyanion
|
A polyatomic anion that contains oxygen combined with another nonmetal atom.
|
|
|
polyatomic ion
|
An ion made up of two or more covalently bonded atoms that carry a charge.
|
|
|
Stock system
|
A method of identifying ions of a common element through the use of Roman numerals.
|
