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bluewalrus692Lv1

6 Oct 2020

What is a hydrocarbon? What is the difference between a saturated hydrocarbon and an unsaturated hydrocarbon? Distinguish between normal and branched hydrocarbons. What is an alkane? What is a cyclic alkane? What are the two general formulas for alkanes? What is the hybridization of carbon atoms in alkanes? What are the bond angles in alkanes? Why are cyclopropane and cyclobutane so reactive? The normal (unbranched) hydrocarbons are often referred to as straight-chain hydrocarbons. What does this name refer to? Does it mean that the carbon atoms in a straight-chain hydrocarbon really have a linear arrangement? Explain. In the shorthand notation for cyclic alkanes, the hydrogens are usually omitted. How do you determine the number of hydrogens bonded to each carbon in a ring structure?

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Robert KubaraLv10

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QUESTION 1

In naming branched alkanes, we name alkane branches of different names in _________ order.

	a.	alphabetical
	b.	numeric
	c.	size
	d.	none

QUESTION 2

A 10 carbon hydrocarbon with a 1 carbon group at the 2nd and 4th carbons, a 3 carbon group at the 5th carbon and a 2 carbon group at the 4th carbon would be named ______________.

	a.	5-propyl-4-ethyl-2,4-dimethyldecane
	b.	4-ethyl-2,4-dimethyl-5-propyldecane
	c.	none
	d.	2,4-dimethyl-4-ethyl-5-propyldecane

QUESTION 3

In naming alkanes, the longest chain is named using a prefix and the suffix _________.

	a.	none
	b.	-yl
	c.	-ane
	d.	-ate

QUESTION 4

In naming branched alkanes, the ___________ chain is given the name of the corresponding n-alkane.

	a.	main
	b.	side
	c.	none
	d.	first

QUESTION 5

In drawing structures from a name, the first step is to ___________.

	a.	draw the carbon skeleton
	b.	add the hydrogens
	c.	none
	d.	draw the branch skeletons

QUESTION 6

In naming branched alkanes, we use __________ to separate the name of the branch from its number.

	a.	an apostrophe
	b.	none
	c.	a dash
	d.	a comma

QUESTION 7

Alkanes are classified as ________ hydrocarbons.

	a.	unsaturated
	b.	transsaturated
	c.	saturated
	d.	none

QUESTION 8

The prefix but- refers to a hydrocarbon with __________ carbons.

	a.	three
	b.	two
	c.	four
	d.	one

QUESTION 9

Alkanes fall into two classifications, __________ alkanes and branched alkanes.

	a.	none
	b.	neat
	c.	normal
	d.	linear

QUESTION 10

The prefix hex- refers to a hydrocarbon with _________ carbons.

	a.	eight
	b.	four
	c.	two
	d.	six

For each of the following, fill in the blank with the correct response. All of these fill-in-the-blank problems pertain to material covered in the sections on alkanes, alkenes and alkynes, aromatic hydrocarbons, and hydrocarbon derivatives.

a. The first "organic" compound to be synthesized in the laboratory, rather than being isolated from nature, was _ _ _ _ _, which was prepared from _ _ _ _ _.

b. An organic compound whose carbon-carbon bonds are all single bonds is said to be _ _ _ _ _.

c. The general orientation of the four pairs of electrons around the carbon atoms in alkanes is _ _ _ _ _.

d. Alkanes in which the carbon atoms form a single unbranched chain are said to be _ _ _ _ _ alkanes.

e. Structural isomerism occurs when two molecules have the same number of each type of atom but exhibit a different arrangement of the _ _ _ _ _ between those atoms.

f. The systematic names of all saturated hydrocarbons have the ending _ _ _ _ _ added to a root name that indicates the number of carbon atoms in the molecule.

g. For branched hydrocarbon, the root name for the hydrocarbon comes from the number of carbon atoms in the _ _ _ _ _ continuous chain in the molecule.

h. The positions of substituents along the hydrocarbon framework of a molecule are indicated by the _ _ _ _ _ of the carbon atom to which the substituents are attached.

i. The major use of alkanes has been in _ _ _ _ _ reactions, as a source of heat and light.

j. With very reactive agents, such as the halogen elements, alkanes undergo _ _ _ _ _ reactions, whereby a new atom replaces one or more hydrogen atoms of the alkane.

k. Alkenes and alkynes are characterized by their ability to undergo rapid, complete _ _ _ _ _ reactions, by which other atoms attach themselves to the carbon atoms of the double or triple bond.

l. Unsaturated fats may be converted to saturated fats by the process of _ _ _ _ _.

m. Benzene is the parent member of the group of hydrocarbons called _ _ _ _ _ hydrocarbons.

n. An atom or group of atoms that imparts new and characteristic properties to an organic molecule is called a _ _ _ _ _ group.

o. A _ _ _ _ _ alcohol is one in which there is only one hydrocarbon group attached to the carbon atom holding the hydroxyl group.

p. The simplest alcohol, methanol, prepared industrially by the hydrogenation of _ _ _ _ _.

q. Ethanol is commonly prepared by the _ _ _ _ _ of certain sugars by yeast.

r. Both aldehydes and ketones contain the _ _ _ _ _ group, but they differ in where this group occurs along the hydrocarbon chain.

s. Aldehydes and ketones can be prepared by _ _ _ _ _ of the corresponding alcohol.

t. Organic acids, which contain the _ _ _ _ _ group, are typically weak acids.

u. The typical sweet-smelling compounds called _ _ _ _ _ result from the condensation reaction of organic acid with an _ _ _ _ _.

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