Multiple ChoiceWhich of the following is a common indicator that a chemical reaction has occurred?34views
Multiple ChoiceWhen a person chews on a saltine cracker for five minutes, it begins to taste sweet. Which of the following best explains this change in taste?205views
Multiple ChoiceWhich of the following is the best explanation for the observed color change in a chemical reaction?31views
Multiple ChoiceWhich term describes a mixture formed when two or more immiscible substances are combined with the help of a binder?39views
Multiple ChoiceThe chemical formula for an emerald is Be3Al2(SiO3)6. An emerald can be described as:62views
Multiple ChoiceWhich of the following best describes viscosity, and under which conditions does magma exhibit high viscosity?33views
Multiple ChoiceWhich element is commonly used to disinfect swimming pools due to its strong oxidizing properties?9views
Multiple ChoiceHow did the hydrocarbons found in petroleum products such as gasoline originally obtain their chemical energy?27views
Multiple ChoiceRank the following anions in order of increasing basicity: Cl^-, OH^-, F^-, and NO_3^-.34views