How is a substance termed when its molecules are made of different types of atoms____________?
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Answer: C. compound
Explanation
A chemical substance composed of different types of atoms is termed a compound. These atoms are held together by strong chemical bonds in fixed mass proportions. Compounds possess physical and chemical properties distinct from their constituent elemental atoms. Elements consist of only one type of atom, whereas compounds contain multiple types. Chemical bonding creates molecules or crystal lattices unique to each chemical compound. Water and sodium chloride are classic examples of well-known chemical compounds.
Compound semiconductor materials like gallium arsenide are vital for high-speed electronics. Chemistry and materials science rely on distinguishing elements from complex compounds. Understanding molecular structure helps engineers select proper materials for device fabrication. Option A refers to semiconductor materials rather than the general chemical definition. Option B refers to materials exhibiting zero electrical resistance at low temperatures. Option D refers to materials that restrict electrical current rather than molecular structure.
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- Engineering
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- Electrical Engineering
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