Answer the following question given this paragraph: Most chemical reactions reach equilibrium at which point there is no net change. Q: At what point during a chemical reaction is there no net change? Choices: - bonding - formation - ionization - equilibrium A:
equilibrium
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Answer the following question given this paragraph: The deprotonated form of an acid is referred to as its conjugate base. Similarly, the protonated form of a base is referred to as its conjugate acid. Q: As ph increases what happens to a solution? Choices: - becomes less basic - depends on the solution - stays the same - becomes more basic A:
becomes more basic
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Answer the following question given this paragraph: Six atoms are evenly organized around a central atom. Q: How many atoms are evenly organized around a central atom? Choices: - four - five - seven - six A:
six
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Answer the following question given this paragraph: Hydrates Many ionic compounds occur as hydrates, compounds that contain specific ratios of loosely bound water molecules, called waters of hydration. Waters of hydration can often be removed simply by heating. For example, calcium dihydrogen phosphate can form a solid that contains one molecule of water per Ca(H2PO4)2 unit and is used as a leavening agent in the food industry to cause baked goods to rise. The empirical formula for the solid is Ca(H 2PO4)2H2O. In contrast, copper sulfate usually forms a blue solid that contains five waters of hydration per formula unit, with the empirical formula CuSO 45H2O. When heated, all five water molecules are lost, giving a white solid with the empirical formula CuSO 4 (Figure 2.9 "Loss of Water from a Hydrate with Heating"). Q: Many ionic compounds occur as hydrates, compounds that contain specific ratios of loosely bound water molecules, called waters of hydration. waters of hydration can often be removed simply by doing this? Choices: - cooling - observing - melting - heating A:
heating
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