5.1 Organic Chemistry
Objective: to identify organic compounds, and explain their
properties and reactions
Outcomes:
All: I can list some uses of alcohols, carboxylic acids and esters
(D/E)
Most: I can identify and name alcohols, carboxylic acids and
esters (C)
Some: I can explain some reactions of alcohols, carboxylic acids
and esters (A/B)
Keywords: organic compounds,
alcohol, carboxylic acid, ester, pH
What is an organic compound?
These are all examples of organic molecules…
Can you see what they have in common?
A ‘backbone’
of CARBON
ATOMS
bound to
hydrogen
I can identify and name alcohols, carboxylic acids and esters (C)
Naming Organic Compounds
These ones you have met before…
Which 2 groups of molecules (homologous series)
are they each from? Can you name them?
ALKANES
-ane
C-C
ethane
ethene
ALKENES
-ene
C=C
I can identify and name alcohols, carboxylic acids and esters (C)
Naming Organic Compounds
Remember the carbon naming…?
methane
propane
Number of Carbon
Atoms in Chain
Start of
Molecule Name
1
2
3
4
MethEthPropBut-
ethane
butane
I can identify and name alcohols, carboxylic acids and esters (C)
Naming Organic Compounds
This one you might know….
ALCOHOL
Functional Group
-OH
ethanol
Can you think of any
uses of alcohols?
drinks
fuels
What about this one?
methanol
I can identify and name alcohols, carboxylic acids and esters (C)
Naming Organic Compounds
Carboxylic acids
This is ethanoic acid.
What about this
one?
Match the organic compounds to the
correct pictures. Write down your answers.
1. alcohol
3. ester
2. carboxylic acid
A
B
D
E
F
J
C
-COOH
G
-OH
H
K
-COO-
I
Properties & Reactions of Alcohols
Complete the equation:
COMBUSTION
carbon
water
ethanol + oxygen → _________
+ _______
dioxide
Write the balanced symbol equation:
C2H5OH + 3 O2 → 2 CO2 + 3 H2O
I can explain some reactions of alcohols (A/B)
Properties & Reactions of Alcohols
What is the pH of alcohol in water?
pH7
What do you observe when sodium is added?
What gas is formed? HYDROGEN GAS
I can explain some reactions of alcohols (A/B)
Naming Organic Compounds
This one is a CARBOXYLIC ACID
CARBOXYLIC ACID
- anoic acid
-COOH
ethanoic acid
Can you think of any
uses of carboxylic acids?
vinegar
What about this one?
propanoic acid
I can identify and name alcohols, carboxylic acids and esters (C)
Properties & Reactions
of Carboxylic Acids
What do you observe when 1moldm-3 HCl is added
to calcium carbonate?
What do you observe when 1moldm-3 ethanoic
acid is added to calcium carbonate?
But slower…
What gas is formed? CARBON DIOXIDE GAS
What is the pH of carboxylic acid in water?
I can explain some reactions of carboxylic acids (A/B)
pH2-5
Reactions
of Carboxylic Acids and Alcohols
+
→
ethyl ethanoate
ESTER
- yl -anoate
alcohol c.acid
-COO-
I can explain some reactions of carboxylic acids and alcohols (A/B)
I can identify and name alcohols, carboxylic acids and esters (C)
Use of esters
Can you think of any uses of esters?
perfumes
flavourings
biofuels
I can list some uses of alcohols, carboxylic acids and esters (D/E)
Match the organic compounds to the correct
pictures. Have you changed your mind?
1. alcohol
3. ester
2. carboxylic acid
A
B
D
E
F
J
C
-COOH
G
-OH
H
K
-COO-
I
I can identify (C) and
list some uses of
alcohols, carboxylic
acids and esters
(D/E)
How did you do…?
1. alcohol
A
2. carboxylic acid
B
E
F
J
C
3. ester
D
D
-COOH
G
-OH
H
K
-COO-
I
I can identify (C) and
list some uses of
alcohols, carboxylic
acids and esters
(D/E)