Q: Transition metals are superior conductors of heat as well as what else? Read this paragraph and choose the correct option from the provided answers: Transition metals are superior conductors of heat as well as electricity. They are malleable, which means they can be shaped into sheets, and ductile, which means they can be shaped into wires. They have high melting and boiling points, and all are solids at room temperature, except for mercury (Hg), which is a liquid. Transition metals are also high in density and very hard. Most of them are white or silvery in color, and they are generally lustrous, or shiny. The compounds that transition metals form with other elements are often very colorful. You can see several examples in the Figure below . Choices: - light - radiation - cold - electricity A:
electricity
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Q: Some hormones produced by the anterior pituitary regulate the production of hormones by other tissues belonging to what system? Read this paragraph and choose the correct option from the provided answers: The anterior pituitary produces six hormones: growth hormone, prolactin, thyroid-stimulating hormone, adrenocorticotropic hormone, follicle-stimulating hormone, and luteinizing hormone. Growth hormone stimulates cellular activities like protein synthesis that promote growth. Prolactin stimulates the production of milk by the mammary glands. The other hormones produced by the anterior pituitary regulate the production of hormones by other endocrine tissues (Table 16.1). Choices: - nervous - digestive - cardiovascular - endocrine A:
endocrine
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Q: When something loses electrons, it must also? Read this paragraph and choose the correct option from the provided answers: Solution The charges, as well as the atoms, must balance in reactions. The silver atom is being oxidized from the 0 oxidation state to the 1+ state. Whenever something loses electrons, something must also gain electrons (be reduced) to balance the equation. Oxygen is a good oxidizing agent for these reactions because it can gain electrons to go from the 0 oxidation state to the 2 state. Choices: - reduce protons - slow down - gain protons - gain electrons A:
gain electrons
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Q: What type of gases are used for balloons, light bulbs and lighted signs? Read this paragraph and choose the correct option from the provided answers: Noble gases are used for balloons, light bulbs, and lighted signs. Choices: - ignoble - helium - heavy - noble A:
noble
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