Background
Predicting Bond Type
Counting Atoms
Lewis Structures
Molecular Shapes
100
Chemical bonds form due to an attraction between one atom and another atom's _________________.
Valence Electrons
100
What 2 factors determine the type of bond that will form between atoms?
Number of valence electrons and electronegativity
100
What is a small number written at the bottom of a chemical symbol that only applies to the atom or unit written before it?
Subscript
100
What is used in Lewis structures to represent bonds between atoms?
Lines
100
________ is the name of the theory that electron pairs within molecules will mutually repel one another and orient themselves as far apart as possible.
VSEPR (Valence Shell Electron Pair Repulsion)
200
In what type of bond are electrons shared equally?
Nonpolar covalent bonds
200
What type of bond will form between Selenium (Se) and Iodine (I)?
Nonpolar covalent bond
200
In the following chemical formula, what is the coefficient?
4 Al2O3
4
200
State the octet rule.
Atoms will bond with other atoms to get 8 valence electrons.
200
To determine a molecule's 3D geometric shape, what 2 things do you need to know?
Number of atoms bound to the CENTRAL atom
number of lone pairs on the CENTRAL atom
300
In a metallic bond, valence electrons become __________ and are free to move about between atoms like water in the sea.
"Delocalized"
300
What type of bond will form between Chlorine (Cl) and Potassium (K)?
Ionic bond
300
What device is used to designate a singe unit or subgroup within a molecule that implies something about its structure?
Parentheses. e.g. Ca(OH)2
300
Which bond in the following molecule is the strongest?
The carbon-nitrogen triple bond
300
When a molecule has 2 bonded atoms and 1 lone pair on the central atom, what shape will it have?
Bent-120
400
What type of chemical bond results in a neutral bond with partially charged opposite ends (dipole)?
Polar covalent bonds
400
What type of bond will form between Boron (B) and Oxygen (O)?
Polar covalent bond
400
How many carbon atoms are present in a molecule of acetone: CO(CH3)2
3
400
__________ occurs when double or triple bonds become delocalized within a covalent molecule, resulting in greater stability.
Resonance
400
What is the angle between the bonds in the following molecule?
About 109o
500
After electrons are transferred from one atom to another, an ionic bond forms. What causes the actual bond to form between these two newly formed ions?
The mutual attractive force between them due to their opposite electric charges.
500
What type of bond will form between Vanadium (V) and Chromium (Cr)?
Metallic bond
500
How many hydrogen atoms are present in the following formula?
3 (NH4)3PO4
36
500
Draw a Lewis structure for the following molecule:
PO2-
500
DRAW the molecular shape for PBr3
