Iron(II) oxide

High school (ages 12+)
Science & Technology

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Date:

Step 1 · Read the article

Open the article and read it at the level above. Then answer the questions below in your own words.

https://smallwhale.org/articles/ironii-oxide

Write what each word means, using the article.

Do not copy the article. Write two things you learned, the way you would explain them to a friend.

Answers below are taken from the article’s stored facts, so they match what the student read.

1. What is the chemical formula?FeO
2. What is the mineral name?Wüstite
3. Why is iron(II) oxide black while rust is red?The black color comes from iron in the +2 oxidation state. Rust has iron in a +3 state, which gives it a reddish‑brown color.
4. Where can we find iron(II) oxide in nature?It forms in very hot, low‑oxygen places like the cores of iron meteorites or deep inside the Earth's mantle. Scientists study it to learn about the planet's interior.

Oxidation state: A number assigned to an element in a chemical combination that indicates the degree of oxidation (loss of electrons).
Non-stoichiometric compound: A chemical compound with an imbalance in the elemental composition relative to the ideal stoichiometric ratio.
Redox conditions: The balance between oxidation (loss of electrons) and reduction (gain of electrons) in a chemical system.
Cation vacancy: A defect in a crystal lattice where a positively charged ion (cation) site is empty.