TEKS 7.6A: organic compounds contain
carbon and other elements such as
hydrogen, oxygen, phosphorus, nitrogen
or sulfur.
What
are elements?
What are compounds?
Agree on definitions for
each word. Be ready to share them .

Elements are substances that cannot be
broken down into any other substance by
chemical or physical means.

The Periodic Table organizes the elements
based on their physical and chemical
properties.

An element can be made of a
single atom or 2, or more of the same
atoms joined in a molecule
(ex. He or C)
 When
elements are combined they make
compounds.
A
compound is a substance made of 2 or
more different elements that are
chemically bound and set together in a set
ratio.
Salt
NaCl
Glucose
C6H12O6
Iron
Fe
Carbon Dioxide
CO2
Water
H2O
Oxygen
O2
Fertilizer
Ca2(PO4)2
 Formulas
show what elements and how many
atoms of each element are involved in the
compound.
 H2O
(water)
 2- Hydrogen and 1- Oxygen
 NaCl (table salt)
 1- Sodium and 1 Chlorine
 CO2 (carbon dioxide)
 1- Carbon and 2 Oxygen
 NH3 (ammonia)
 1 Nitrogen and 3 Hydrogen

Methane - CH4

Formaldehyde - CH2O

Ethanol - C2H6O

Salicylic acid (used for acne) - C7H6O3

Histamine - C5H9N3
Contain the elements
Carbon and Hydrogen.
 are made from plant or
animal products
 They can also include
other elements such as
oxygen, phosphorus,
nitrogen, sulfur
 All living things are organic
compounds
 Organic compounds are
formed by producers that
use carbon dioxide from
the air and water from the
soil to make food

 Living
organisms
obtain elements
needed to make
organic compounds
 They get these
compounds from:



The atmosphere (air)
Water from the soil
Consuming other
organisms
 Latin
prefix “in-” means
“not, lacking, without”
 Compounds that do not
contain Carbon that is
bonded to a hydrogen C-H
 Is carbon dioxide (CO2 )
organic or inorganic? Why?
 Inorganic compounds are
produced by non-living
natural processes or by
human intervention in the
laboratory
Salt
NaCl
Glucose
C6H12O6
Carbon Dioxide
CO2
Water
H2O
Caffeine
C8H10N4O5
Fertilizer
Ca2(PO4)2
Chlorophyll
C55H72MgN4O5
Many
elements and compounds go
through cycles
The nitrogen cycle and the carbon
cycle are two that we will explore in
depth
These cycles describe how the element
in the environment flows among living
beings, inorganic matter and the
atmosphere.

Fill in these two diagrams, then put your notes in
your binder