CHEMISTRY PBL: ACTIVITY 1M

CHEMISTRY PBL: ACTIVITY 1M. Group Members: Chen Jie Yue Lai Xin Yin Leong Eiko Sweeney Chaw (5 Topaz).

Questions: 1. Discuss and explain the following situation: (a) What is the difference between rusting of iron and metal corrosion? (b) Describe the mechanisms for rusting from the aspects of oxidation and reduction (c) How can metals that are more electropositive than iron prevent rusting of iron? State examples of application in daily life for each situation. 2. Present your discussion with the group members in Gallery Walk activity..

Rust is the common name for iron oxide. The most familiar form of rust is the reddish coating that forms flakes on iron and steel ( Fe 2 O 3 ), but rust also comes in other colors including yellow, brown, orange, and green. The different colors reflect various chemical compositions of rust. Information from: https://www.thoughtco.com/how-rust-works-608461.

a) What is the difference between rusting of iron & metal corrosion?.

b) Describe the mechanisms for rusting of iron and metal corrosion.

c) How can metals that are more electropositive than iron prevent rusting of iron?.