How Much Do You Know About Iron Oxide?

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1/8 Questions

Iron oxide is used to _____________
- Make steel
- Make fabric
- Make contact lenses

About This Quiz

Do you have a chemistry test on iron oxide soon? Take this quiz to see how prepared you are for your exam.

How Much Do You Know About Iron Oxide? - Quiz

2.

Iron oxide is typically this color.
- Red
- Green
- Blue
- Yellow
Correct Answer

A. Red

Explanation

Iron oxide is typically red in color because it is composed of iron atoms bonded with oxygen atoms. The red color is a result of the specific arrangement of atoms in the compound, which absorbs and reflects certain wavelengths of light. This absorption and reflection of light give iron oxide its characteristic red appearance.

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3.

The formula for Iron Oxide is _______________
- Fe2O3
- Fe3O2
- FeOH
- Fe4O5
Correct Answer

A. Fe2O3

Explanation

The correct answer is Fe2O3 because it represents the formula for Iron Oxide. In this formula, Fe represents the chemical symbol for iron, and the subscript 2 indicates that there are two iron atoms present. The subscript 3 indicates that there are three oxygen atoms present. Therefore, Fe2O3 represents the correct formula for Iron Oxide.

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4.

Is it a solid, gas or liquid?
- Solid
- Gas
- Liquid
Correct Answer

A. Solid

Explanation

The given correct answer is "Solid". This implies that the object or substance being referred to has a definite shape and volume, and its particles are closely packed and arranged in a regular pattern. Solids have a fixed shape and cannot be easily compressed or expanded.

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5.

Iron Oxide is found in _______________
- Limestone
- Grapefruit
- Magnetite
- Kale
Correct Answer

A. Magnetite

Explanation

Iron Oxide is found in magnetite. Magnetite is a naturally occurring mineral that is a major source of iron. It is a black or brownish-black mineral with a metallic luster and is often magnetic. Iron oxide refers to the chemical compound made up of iron and oxygen, and magnetite is one of the main forms of iron oxide. It is commonly found in igneous and metamorphic rocks, as well as in certain types of sedimentary rocks. Therefore, magnetite is the correct answer as it is a specific mineral where iron oxide can be found.

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6.

The molar mass of Iron Oxide is __________ g/mol
- 159
- 162
- 155
- 165
Correct Answer

A. 159

Explanation

The molar mass of Iron Oxide is 159 g/mol because it is a compound made up of iron and oxygen. Iron has a molar mass of 56 g/mol and oxygen has a molar mass of 16 g/mol. Since there are two oxygen atoms in Iron Oxide, we multiply the molar mass of oxygen by 2 and add it to the molar mass of iron. This gives us a total molar mass of 56 + (16 * 2) = 56 + 32 = 88 g/mol for iron oxide. However, the question asks for the molar mass of Iron Oxide, not just iron, so the correct answer is 159 g/mol.

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7.

The density is _______ g/cm3
- 6.24
- 5.24
- 4.24
- 3.24
Correct Answer

A. 5.24

Explanation

The given answer, 5.24 g/cm3, is the correct density value. The question asks for the density, which is typically measured in grams per cubic centimeter (g/cm3). Therefore, the answer 5.24 g/cm3 is the appropriate value to represent the density.

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8.

Iron oxide is also called ____________
- Iron oxygen
- Oxygenated iron
- Ferric oxide
- Ferric dioxide
Correct Answer

A. Ferric oxide

Explanation

Iron oxide is the correct answer because it is the scientific name for the compound commonly known as rust. Iron oxide is formed when iron reacts with oxygen in the presence of water or moisture. It is a reddish-brown compound and is commonly used as a pigment in paints and coatings. Ferric oxide is a more specific term for iron oxide, as it refers to the compound in which iron has a +3 oxidation state.

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