Multiple Choice
For the solid forms of the following elements, which one is most likely to be classified as a molecular solid?
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1. Intro to General Chemistry
Classification of Matter
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Iron ore and ________ are necessary resources for the production of steel. Which of the following best completes the sentence?
A
oxygen
B
silicon
C
nitrogen
D
carbon
Verified step by step guidance1
Understand the context: Steel production primarily involves combining iron with another element to improve its properties.
Recall that iron ore is the main source of iron, but pure iron is too soft for most applications, so it is alloyed with another element to make steel stronger and harder.
Identify the common alloying element in steel production, which is carbon, as it significantly increases the strength and hardness of iron.
Review the options given: oxygen, silicon, nitrogen, and carbon. Among these, carbon is the essential element added to iron to produce steel.
Conclude that the sentence is best completed by 'carbon' because steel is an alloy of iron and carbon.
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