CHEM 219 Module 1 Exam Questions with
Answers Already Graded A+
1. What is organic chemistry? - ANSWER Branch of chemistry that studies
the structure, properties, composition, reaction and synthesis of organic
compounds which contain carbon atoms.
2. Catenation - ANSWER Ability of ab element to form bonds with itself,
resulting in formation of chains, rings or complex structures.
Allows for vats diversity of organic compounds in terms of reactivity and
properties
3. The properties & reactivity of an organic molecule are controlled by its -
ANSWER composition & shape
4. Why do atoms form bonds to other atoms? - ANSWER Energetic stability
5. To say an atom is energetically stable means that the overall energy of the
atom is - ANSWER lower when in the bonded state than in a non bonded
state
6. How does electronegativity (X) increase - ANSWER increases moving
towards the right and going up the PTOTE
7. Covalent Bonds - ANSWER share electrons bt elements with little or no
difference in their electronegativity
- Heat is released when covalent bonds are formed
, 8. What do you look at to figure out how many bonds an element will form -
ANSWER LDD
Comes from group number
9. Unpaired electrons - ANSWER # of bonds the atom will form
10.# of pairs of electrons - ANSWER LONE pairs or nonbonding, these do not
participate in bonding
11.On a piece of scratch paper, write out the Lewis Dot Diagram for each of the
indicated elements and determine the following for each:
a) The number of Lone Pairs the atom possesses in its valence
shell.
b) b) The number of Unpaired Electrons the atom possesses in its
valence shell.
c) The number of bonds the atom will form.
Oxygen
Carbon
Hydrogen
Nitrogen - ANSWER Oxygen - a) 2 b) 2 c) 2
Carbon - a) 0 b) 4 c) 4
Hydrogen- a) 0 b) 1 c) 1
Nitrogen - a) 1 b) 3 c) 3
12.Classify the bonding between the given pairs of atoms as ionic, covalent, or
polar covalent. Use the table of electronegativities shown below to help with
the classification.
Answers Already Graded A+
1. What is organic chemistry? - ANSWER Branch of chemistry that studies
the structure, properties, composition, reaction and synthesis of organic
compounds which contain carbon atoms.
2. Catenation - ANSWER Ability of ab element to form bonds with itself,
resulting in formation of chains, rings or complex structures.
Allows for vats diversity of organic compounds in terms of reactivity and
properties
3. The properties & reactivity of an organic molecule are controlled by its -
ANSWER composition & shape
4. Why do atoms form bonds to other atoms? - ANSWER Energetic stability
5. To say an atom is energetically stable means that the overall energy of the
atom is - ANSWER lower when in the bonded state than in a non bonded
state
6. How does electronegativity (X) increase - ANSWER increases moving
towards the right and going up the PTOTE
7. Covalent Bonds - ANSWER share electrons bt elements with little or no
difference in their electronegativity
- Heat is released when covalent bonds are formed
, 8. What do you look at to figure out how many bonds an element will form -
ANSWER LDD
Comes from group number
9. Unpaired electrons - ANSWER # of bonds the atom will form
10.# of pairs of electrons - ANSWER LONE pairs or nonbonding, these do not
participate in bonding
11.On a piece of scratch paper, write out the Lewis Dot Diagram for each of the
indicated elements and determine the following for each:
a) The number of Lone Pairs the atom possesses in its valence
shell.
b) b) The number of Unpaired Electrons the atom possesses in its
valence shell.
c) The number of bonds the atom will form.
Oxygen
Carbon
Hydrogen
Nitrogen - ANSWER Oxygen - a) 2 b) 2 c) 2
Carbon - a) 0 b) 4 c) 4
Hydrogen- a) 0 b) 1 c) 1
Nitrogen - a) 1 b) 3 c) 3
12.Classify the bonding between the given pairs of atoms as ionic, covalent, or
polar covalent. Use the table of electronegativities shown below to help with
the classification.
