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Praxis Elementary Education Three-Subject Bundle – Science (5905) Practice Test

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Which term refers to elements that react easily with other substances, are poor conductors, readily accept electrons, and are gaseous at room temperature?
Correct Answer:
Nonmetals
Explanation:
Elements that tend to react with many substances, don’t conduct electricity well, readily accept electrons, and are often gases at room temperature are nonmetals. Nonmetals typically have high electronegativity and electron affinity, so they gain electrons in reactions to form negative ions or share electrons in covalent bonds. Their lack of metallic bonding means they don’t have free-moving electrons, which makes them poor conductors of heat and electricity. At room temperature, many nonmetals exist as gases—like oxygen and nitrogen—while others are liquids or solids, showing a broad range of states but a common behavior: they are reactive, electron-hungry partners in compounds and generally poor conductors.

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