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e2020

How many valence electrons does a carbon atom have?

4

How many covalent bonds can each carbon atom form?

4

How many double covalent bonds are in an alkane?

0

What is the simplest alkane?

methane

Which quantity represents the prefix used in naming straight-chain alkanes with the exception of methane, propane, and butane?

number of carbon atoms in the alkane

Which of the following is a condensed structural formula for propane?

CH3CH2CH3

The longest continuous carbon chain of a branched-chain hydrocarbon is called a(n) ____.

parent alkane

What is the general formula for a straight-chain alkane?

C{n}H{2n+2}

What is the name of a straight-chain alkane compound contained in most candles?

Paraffin

Which of the following structures are not found in aliphatic compounds?

aromatic rings

How many double covalent bonds are in an alkane?

0

The longest continuous carbon chain of a branched-chain hydrocarbon is called a(n) ____.

parent alkane

In a cyclic hydrocarbon with only carbon-carbon single bonds and n number of carbon atoms, how many hydrogen atoms are there in terms of n?

2n

Carbon containing compounds are referred to as:

Organic compounds

Name the following structure:
CH3-CH3-CH2CH3

2-ethyl-1,4-dimethylcyclohexane

Hydrogen and carbon atoms bonded with single bonds are called:

Hydrocarbons

Name the cycloalkane shown:
CH3-CH3-CH3

1,3,4-trimethylcyclohexane

The most efficient shape for the bonding of carbon and hydrogen, in methane, is:

Tetrahedral

Small hydrocarbons have what characteristics?

Gases at room temperature

Hydrocarbons are usually liquids at room temp when they are:

Carbon chains 5-12

How many valence electrons does a carbon atom have?

4

Carbon containing compounds are referred to as:

Organic compounds

Alkanes with five carbon atoms have the prefix _____.

Pen

organic compound that contains at least one double or triple carbon-carbon bond

unsaturated compound

any straight-chain or branched-chain alkane, alkene, or alkyne

aliphatic hydrocarbon

In which of the following compounds does rotation occur around all covalent bonds between carbons?

octane

A saturated straight-chain hydrocarbon with two carbons is ____.

ethane

An organic compound that contains only carbon and hydrogen and at least one carbon-carbon triple bond is classified as an ____.

alkyne

The process that decomposes alkanes into alkenes and alkynes using heat and a catalyst is called __________.

cracking

Which of the following alkynes produces the hottest flame (3200°C) when burned in oxygen and is primarily used as a fuel gas.

acetylene

Alkanes containing hydrocarbon rings are called:

Cyclic alkanes

organic compound that contains the maximum number of hydrogens per carbon atom

saturated compound

Which of the following is true about structural isomers?

all of the above

Alkanes do not have geometric isomers because the carbon atoms in their carbon-carbon bonds are ____.

free to rotate

Mirror image isomers are referred to as _____ isomers.

Optical

compounds that have the same molecular formula, but the atoms are joined in a different order

structural isomers

carbon atom to which four different atoms or groups are attached

asymmetric carbon

How many structural isomers does pentane have?

Four

What type of isomers have the same molecular formula, the same connections between atoms, but have atoms with different three dimensional arrangements?

stereoisomers

Which of the following alkynes produces the hottest flame (3200°C) when burned in oxygen and is primarily used as a fuel gas.

acetylene

Which of the following compounds is an unsaturated hydrocarbon?

propyne

Which of the following compounds is a structural isomer of butane?

2-methylpropane

How many different atoms or groups are attached to an asymmetric carbon?

4

What is the purpose of Octane ratings?

Measures the amount of isooctane needed to prevent a car's engine from knocking

Crude oil is separated into useful compounds by:

Fractional distillation

Substances that can cause cancer are called carcinogens.

T

Alkenes with multiple double bonds are very stable.

F

What is the correct order of steps in distillation?

heating, evaporating, cooling, condensing

Which statement is TRUE about the fractional distillation apparatus?

A tall column is used with several condensers coming off at different heights

Which properties are important in the distillation of large hydrocarbons?

They have higher boiling points

Benzene's lack of reactivity is explained by:

Hybrid orbitals

Which of the following compounds is an unsaturated hydrocarbon?

propyne

molecules in which atoms are joined in the same order but differ in the arrangements of their atoms in space

stereoisomers

carbon atom to which four different atoms or groups are attached

asymmetric carbon

What compound is the simplest aromatic compound?

benzene

Which of the following is NOT an important fossil fuel?

hydrogen

Why were chemists convinced that benzene was not an alkene with several double bonds?

Benzene is less reactive than alkenes

Aliphatic compounds are formed from:

Animal fats

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