Organic and Inorganic
molecules
Ms. Blalock, Ms. Hartsell, and Mr. Luckman
Do Now
What are some differences AND similarities
between water and sugar?
Today’s Agenda
At the end of this lesson, we will be able to:
◦Identify organic and inorganic molecules
◦Explain the difference between organic and inorganic molecules
◦Identify the four essential organic compounds that make up life
Aim: How can you identify the organic and inorganic molecules of life? How
do I distinguish between these two molecules?
Agenda:
◦1. Do Now
◦2. Learning the terminology
◦3. Introduction: Organic and Inorganic
◦4. Activity 4: Organic vs. Inorganic
◦5. Organic Compounds
◦6. Activity 6: Poem and Song
◦7. Activity 7: What did I really eat last night?
◦8. Exit Ticket
Terminology
Atom
Element
Definition: Basic building blocks of all Definition: A substance that is made
matter that make up everyday objects up of only one type of atom
- Smallest amount of an element
- Examples include: oxygen and
hydrogen
Compound
Molecule
Definition: A molecule that contains two Definition: Two or more atoms that are
or more elements
joined together
-Examples include: glucose (C2H12O6), - Examples include: H2, O2, H2O
Carbon dioxide (CO2)
Real Life Example: Ice Cream
Analogy
Atom
Compound
Molecule
Elements
Most common elements in living
organisms
Carbon
Hydrogen
Oxygen
Nitrogen
CHON
Organic versus Inorganic
Organic Compounds
Make-up
-Contain both carbon and hydrogen
atoms formed together by bonds
- Come from living organisms
Example:
-Sugars such as glucose
C6H12O6
Inorganic Compounds
Make-up
-DO NOT contain these carbonhydrogen bonds
Example:
-Water
H2O
Water
molecule
Take it back to the Do Now
Discuss with your partner:
Using your understanding of organic and inorganic,
how do sugar and water differ? How are they
similar?
Activity 1: Identifying organic and
inorganic
Directions: Identify each molecule/compound as
organic or inorganic.
When finished, talk with your group about the
following question:
Can you infer from their formulas which seem
more complex, inorganic or organic
compounds?
Activity 1: Identifying organic and
inorganic
Answers to Activity 1:
Sand
SiO2
Inorganic
Sucrose
C12H22O11
Organic
Steel
Fe
Inorganic
Cellulose
C6H10O5
Organic
Hydrogen
Peroxide
H2O2
Inorganic
Four classes of organic
compounds
Carbohydrates
Make-up
- Carbon
- Hydrogen
- Oxygen
Proteins
Make-up
- Carbon
- Hydrogen
- Oxygen
- Nitrogen
Lipids
Make-up
- Carbon
- Hydrogen
- Oxygen
Nucleic Acids
Make-up
- Carbon
- Hydrogen
- Oxygen
- Nitrogen
Role in living
organisms
-Cells use to get
and store energy
Role in living
organisms
-Act as catalyst
-Structural part of
organisms
Role in living
organisms
-Store long term
energy
Role in living
organisms
-stores genetic
energy (DNA)
-makes proteins
(RNA)
Examples:
-Fats
-Oils
-Waxes
Examples:
-DNA
-RNA
Examples:
Examples:
-Sugars (glucose) -Enzymes
-Starches
-Hair
-Nails
Building blocks
Yesterday, we discussed how the basic building
blocks of all living things are cells.
The four classes of organic compounds also have
basic building blocks.
ALL living
things
Carbohydrates
Proteins
Lipids
Nucleic
Acids
cells
monosaccharide
s
(simple sugars)
amino
acids
fatty acids
nucleotides
Check for understanding
Activity 2 (15 minutes)
Directions: Using one of the options below, identify and explain each
of the four classes of organic compounds.
◦Option 1: Write a poem identifying and explaining the four classes of
organic compounds
◦Option 2: Write a song identifying and explaining the four classes of
organic compounds
In your poem or song, you must mention the following for each organic
compound:
◦Make-up of the compound
◦ONE role of the compound
◦ONE example of the compound
Time:
◦10 minutes to create song or poem
◦5 minutes for whole class sharing
Activity 3 (5 minutes)
Directions:
1. Make a list of the foods you ate last night for dinner or yesterday for lunch.
2. Categorize the foods into the following categories:
- Carbohydrates
- Proteins
- Lipids
- Nucleic Acids
3. Of those that contain proteins and nucleic acids, what are the building
blocks of these foods?
4. Explain the relationship between a balanced, healthy diet and the
consumption of these organic compounds.
Exit Ticket