*Question*
Answer the following question given this paragraph: Dentists occasionally use metallic mixtures called amalgams for fillings. If an amalgam contains zinc, however, water can contaminate the amalgam as it is being manipulated, producing hydrogen gas under basic conditions. As the filling hardens, the gas can be released, causing pain and cracking the tooth. Write a balanced chemical equation for this reaction. Q: Dentists occasionally use metallic mixtures called amalgams for what? Choices: - tools - anesthesia - braces - fillings A:
**Answer**
fillings

*Question*
Answer the following question given this paragraph: Discussion Quite a trip (if it survives)! Note that this distance is the total distance traveled by the fly. Displacement is actually zero for complete revolutions because they bring the fly back to its original position. The distinction between total distance traveled and displacement was first noted in One-Dimensional Kinematics. Q: Where was the distinction between total distance traveled and displacement first noted? Choices: - uncertainty principle - Newton's first law - string theory - one-dimensional kinematics A:
**Answer**
one-dimensional kinematics

*Question*
Answer the following question given this paragraph: Q: The human body regulates the use and storage of what simple sugar, a major cellular fuel? Choices: - carbohydrate - insulin - secretion - glucose A:
**Answer**
glucose

*Question*
Answer the following question given this paragraph: Figure 34.16 Digestion of carbohydrates is performed by several enzymes. Starch and glycogen are broken down into glucose by amylase and maltase. Sucrose (table sugar) and lactose (milk sugar) are broken down by sucrase and lactase, respectively. Q: Digestion of carbohydrates is performed by several enzymes. starch and glycogen are broken down into glucose by amylase and maltase. sucrose (table sugar) and lactose (milk sugar) are broken down by sucrase and this? Choices: - lipase - pepsin - hydrolase - lactase A:
**Answer**
lactase