(a)
Interpretation:
The yellow colored substance is to be identified as a semimetal
Concept introduction:
The elements which are brittle, exists in powdery solids or gases form, can gain electrons easily and have properties opposite to that of metals are classified as nonmetals.
Metalloids or semimetals have both the properties of metals as well as non-metals. Their physical properties resemble that of metals and chemical properties resemble that of non-metals.
A compound is a substance which consists of two or more elements in definite proportion
(b)
Interpretation:
The gray colored substance is to be identified as a semimetal
Concept introduction:
The elements which are brittle, exists in powdery solids or gases form, can gain electrons easily and have properties opposite to that of metals are classified as nonmetals.
Metalloids or semimetals have both the properties of metals as well as non-metals. Their physical properties resemble that of metals and chemical properties resemble that of non-metals.
A compound is a substance which consists of two or more elements in definite proportion bonded by chemical bonds. The elements do not essentially show their characteristics properties in a compound.
(b)
Interpretation:
The orange colored substance is to be identified as a semimetal
Concept introduction:
The elements which are brittle, exists in powdery solids or gases form, can gain electrons easily and have properties opposite to that of metals are classified as nonmetals.
Metalloids or semimetals have both the properties of metals as well as non-metals. Their physical properties resemble that of metals and chemical properties resemble that of non-metals.
A compound is a substance which consists of two or more elements in definite proportion bonded by chemical bonds. The elements do not essentially show their characteristics properties in a compound.
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EBK INTRODUCTORY CHEMISTRY
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