Alkanes and Alkenes Flashcards Preview

E Summer Trials Chemistry > Alkanes and Alkenes > Flashcards

Flashcards in Alkanes and Alkenes Deck (22)
Loading flashcards...
1
Q

Why are compounds in the same homologous series similar?

A

Compounds in the same homologous series have the same general formula and therefore similar chemical properties

2
Q

Explain what a hydrocarbon is

A

A hydrocarbon is a compound made up only of hydrogen and carbon

3
Q

Explain what saturated means

A

Saturated means something has bonded as many times as possible

4
Q

Explain what unsaturated means

A

Unsaturated means that more bonds can be made

5
Q

What is a general formula?

A

The General Formula is the most simplified ratio of molecules can be

6
Q

What is an isomer?

A

An isomer is a compound which has the same general formula as another, but has a different structure

7
Q

What general formula do alkanes have?

A

CnH2n+2

8
Q

What is the name of the alkane with one carbon atom with a structure of CH4?

A

Methane

9
Q

What is the name of the alkane with two carbon atoms with a structure of C2H6?

A

Ethane

10
Q

What is the name of the alkane with three carbon atoms with a structure of C3H8?

A

Propane

11
Q

What is the name of the alkane with four carbon atoms with a structure of C4H10?

A

Butane

12
Q

What is the name of the alkane with five carbon atoms with a structure of C5H12?

A

Pentane

13
Q

What are the products of the complete combustion of alkanes?

A

Carbon dioxide and water

14
Q

What are the products of the incomplete combustion of alkanes?

A

Carbon monoxide and water

15
Q

Describe the substitution reaction of methane with bromine to form bromomethane in the presence of UV light?

A

In UV lighting, bromine and methane will form bromomethane

CH4 + Br2 > CH3Br + HBr Bromine has taken place of hydrogen (substitution)

16
Q

What general formula do alkenes have?

A

CnH2n

17
Q

What is the name of the alkene with one carbon atom with a structure of CH2?

A

Methene

18
Q

What is the name of the alkene with two carbon atoms with a structure of C2H4?

A

Ethene

19
Q

What is the name of the alkene with three carbon atoms with a structure of C3H6?

A

Propene

20
Q

What is the name of the alkene with four carbon atoms with a structure of C4H8?

A

Butene

21
Q

What is the difference between alkanes and alkenes in terms of their bonds?

A

Alkenes have one double bond between two carbon atoms

22
Q

Describe the addition reaction of alkenes with bromine

A

An alkene with make its double bond into a single bond in order to bond with two bromines. Bromine is added to the molecule

Product: colourless. Test alkenes by adding it with bromine water (brown > colourless) C2H4 (g) + Br2 (aq) > C2H4Br2(aq)