REDOX in the Natural World/Corrosion

0.0(0)
Studied by 0 people
call kaiCall Kai
learnLearn
examPractice Test
spaced repetitionSpaced Repetition
heart puzzleMatch
flashcardsFlashcards
GameKnowt Play
Card Sorting

1/13

encourage image

There's no tags or description

Looks like no tags are added yet.

Last updated 2:05 AM on 10/5/26
Name
Mastery
Learn
Test
Matching
Spaced
Call with Kai
Chat

No analytics yet

Send a link to your students to track their progress

14 Terms

1
New cards

photosynthesis

  • 6 CO₂(g) + 6 H₂O(l) + energy → C₆H₁₂O₆(g) + 6 O₂(l)

  • oxidized: H2O

  • reduced: CO2

  • oxidizing agent: CO2

  • reducing agent: H2O

  • 24 electrons lost/gained

  • endothermic


2
New cards

cellular respiration

  • C₆H₁₂O₆(g) + 6 O₂(l) → 6 CO₂(g) + 6 H₂O(l) + energy

  • oxidized: C₆H₁₂O₆

  • reduced: O₂

  • oxidizing agent :O₂

  • reducing agent: C₆H₁₂O₆

  • 24 electrons lost/gained

  • exothermic - releasing small amounts (liquid)


3
New cards

rust

  • 4 Fe(s) + 3 O₂(g) + 6 H₂O(l) → 4 Fe(OH)3(s) + energy

  • oxidized: Fe

  • reduced: O₂

  • oxidizing agent :O₂

  • reducing agent: Fe

  • 12 electrons lost/gained


4
New cards

Corrosion

reaction of a metal with moisture/oxygen in the environment to produce a metal ore

5
New cards

corrosion process

  • outside of water has more dissolved oxygen, attracting electrons

  • iron metal loses electrons, transferring to the outside of the water

  • iron ions enter the water and the middle starts to pit


6
New cards

anode

  • site of oxidation

  • loses electrons


7
New cards

cathode

  • site of reduction

  • gains electrons


8
New cards

corrosion prevention

  • painting/coating the metal

  • impressed current/cathodic prevention

  • galvanizing the metal

  • sacrificial anode


9
New cards

coating the metal

  • paint or wax prevents water from reacting with iron

  • small openings can cause rusting


10
New cards

sacrificial anodes

  • highly reactive metals

  • strong reducing agents

  • prevent less reactive materials from corroding

  • consumed instead of the protected metal

  • more negative electrochemical potential than protected metal


11
New cards

galvanizing the metal

  • zinc is used as a protective oxide coating over the iron

  • if it is scratched, zinc acts as a sacrificial anode


12
New cards

corrosion prevention/cathodic protection

  • forces iron to act as a cathode

  • saturating irons surface with electrons

  • water takes electrons from coated layer rather than the metal


13
New cards

rusting nails

  • water: rusts

  • water + NaCl: rusts more and flakes

  • water + oil: no rust

  • CaCl2: no rust


14
New cards

rusting nails explaination

  • water: exposed to oxygen/water

  • water + NaCl: exposed to oxygen/water/salt

  • water + oil: exposed to water

  • CaCl2: exposed to oxygen