Module 3 ( Chemical Bonding, Reaction Types, Balancing, Stoichiometry) Flashcards
What is chemical bonding?
The force of attraction between atoms
True or False. Atoms need 8 electrons for them to be stable.
True
Differentiate anion from cation.
Anion has negative charge from gaining electrons while cation has a positive charge from losing electrons.
Enumerate the two types of chemical bonds.
Ionic and Covalent Bond
Bonding between a metal and a nonmetal
Ionic Bonding
What is ionization?
When atoms gain or lose electrons.
Bonding between nonmetals, or nonmetal with itself.
Covalent bonds.
Differentiate the two types of covalent bonds.
Nonpolar are when electrons are equally shared and between 2 unlike atoms. Polar are when electrons are unequally shared with atoms of the same kind.
What is the electronegativity difference between the types of bonds?
Nonpolar : 0 - 0.5
Polar: 0.5 - 1.6
Ionic - 1.7 and up
What naming system should be used when a compound consists of a metal?
The naming system for ionic compounds
True or False. The group number is the number of neutrons in the outermost shell.
(If false, correct the statement)
False.
The group number is the number of electrons in the outermost shell.
The electron dot structures for molecules
Lewis structure
What do the unshared electrons in a compound call?
Lone pairs
What is a polyatomic ion?
It contains both ionic and covalent bond.
A compound consisting of two different elements.
Binary compounds
A hydrogen atom bonded with another atom as an anion.
Binary acids
Differentiate the naming for liquid and gaseous acids.
Liquids: hydro + nonmetal + ic + acid
Gaseous: hydrogen + nonmetal + ide
Naming for binary ionic compounds.
Metal + nonmetal “ide”
Which type of binary compounds uses prefixes in naming?
BInary covalent compounds
True or False. In binary covalent, anions should be first in naming.
(If false, correct the statement)
False.
In binary ionic, cations are the first in names. The second element ends with “ide” and includes a prefix based on how many atoms.
Used by Dalton as a shorthand notation.
Symbols of elements
When writing a chemical formula, what should one know first?
Know the charges of ions first.
2 general rules in writing a chemical formula.
- No subscript if it has the same amount of charges
2. Swap subscripts with different amounts of charges.
True or False. All polyatomic ions end with “-ate” or “-ite” except cyanide, hydroxide, peroxide.
(If false, correct the statement.)
True