created by:
4301412076
Rizka Nur Yuniarsih
Chemistry Education 3rd Group
CORE
COMPETENCIES
BASIC
COMPETENCIES
INDICATORS
LEARNING
PRODUCTS
MATTER
CC3 : Understanding, applying, analyzing,
conceptual, procedural, based on his
curiosity about science, technology,
arts, culture, and humanities with an
insight into humanity, national, state,
and civilization-related causes of
phenomena and events, as well as
applying procedural knowledge in a
specific field of study according to their
talents and interests to solve the
problem.
CC4 : Processing, reasoning, present, and
create in the realm of the concrete and
abstract domains associated with the
development of the self-learned at
school, and were able to use the
method according to the rules of
science.
CORE
COMPETENCIES
BASIC
COMPETENCIES
INDICATORS
LEARNING
PRODUCTS
MATTER
3.4 Analyze the factors that affect the
corrosion and submit idea/notion to
solve it
4.4 Submit an idea/notion to prevent
and resolve corrosion
Describe factors that affect the
occurrence of corrosion through
experiments
Describe several ways to prevent
corrosion
CORE
COMPETENCIES
BASIC
COMPETENCIES
INDICATORS
LEARNING
PRODUCTS
MATTER
1.Students are able to explain the
factors that affect the occurrence of
corrosion through experiments.
2.Students are able to explain several
way to prevent corrosion.
3.Concept mapping on corrosion and
their relationship with human live.
4.Presentation in power points relevant
to the concept taught.
CORE
COMPETENCIES
BASIC
COMPETENCIES
INDICATORS
LEARNING
PRODUCTS
MATTER
Corrosion is reduction-oxidation reaction
between a metal with other compound present
in the environment (such as water and air)
which produce undesirable compounds.
We know it as formation of rust.
Metal rust generally in the form of oxides or
carbonates.
When iron submerged or in contact with an
electrolyte such as sea water or dew, in the area
of anode, Fe(s) Fe2+(aq) + 2e–
In the cathode, when electron loose in the
electrolyte, then break down into positive and
negative ions, forming O2(g) + 2 H2O(l) + 4e–
4 OH–(l)
Because a cycle then the Hydroxyl ions (OH-)
back to the anode through electrolyte carries
electron.
Iron ion(II) which formed in the anode will be
oxidized to form iron (III) which then form
hydrates oxides compound Fe2O3·xH2O called
rust.
Preventing of corrosion in iron can be done
by these following methods:
a. Coating iron with paint
b. Chromium plating
c. Tin plating
d. Galvanization
e. Sacrificial Anode