Multiple Choice
Which element is commonly used for the shiny trim and plating on cars due to its corrosion resistance and reflective appearance?
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5. Molecules and Compounds
Periodic Table: Elemental Forms (Simplified)
Multiple Choice
Diamonds and graphite are two allotropes made entirely of which element?
A
Silicon (Si)
B
Carbon (C)
C
Chlorine (Cl)
D
Calcium (Ca)
Verified step by step guidance1
Understand the term 'allotropes': Allotropes are different structural forms of the same element, where atoms are bonded together in different ways, resulting in distinct physical properties.
Identify the elements listed in the options: Silicon (Si), Carbon (C), Chlorine (Cl), and Calcium (Ca).
Recall that diamonds and graphite are well-known allotropes, meaning they are different forms of the same element.
Recognize that both diamond and graphite are made entirely of carbon atoms arranged differently: diamond has a tetrahedral structure, while graphite has layers of hexagonally arranged atoms.
Conclude that the element common to both diamond and graphite is Carbon (C).
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