Answer the following question given this paragraph: Paint keeps oxygen and water from coming into direct contact with the metal, which prevents corrosion. Paint is more necessary because salt is an electrolyte that increases the conductivity of water and facilitates the flow of electric current between anodic and cathodic sites. Q: Paint keeps oxygen and water from coming into direct contact with the metal, which prevents what? Choices: - heat - evaporation - filtration - corrosion A:
corrosion
Answer the following question given this paragraph: Cellulose is another complex carbohydrate found in plants that is a polymer of glucose. Cellulose molecules bundle together to form long, tough fibers. Cellulose is the most abundant biochemical compound. It makes up the cell walls of plants and gives support to stems and tree trunks. Q: What is the most abundant biochemical compound? Choices: - soil - methane - tissue - cellulose A:
cellulose
Q: Answer the following question given this paragraph: There are several different equations that better approximate gas behavior than does the ideal gas law. The first, and simplest, of these was developed by the Dutch scientist Johannes van der Waals in 1879. The van der Waals equation improves upon the ideal gas law by adding two terms: one to account for the volume of the gas molecules and another for the attractive forces between them. Q: Which equation improves upon the ideal gas law by adding two terms: one to account for the volume of the gas molecules and another for the attractive forces between them? Choices: - Heidiger's principle - Pascal's equation - Newton's third law - van der waals A:
A: van der waals
Question: Answer the following question given this paragraph: Some metals, such as gold and platinum, do not corrode easily because they are very resistant to oxidation by common substances. Some other metals begin to be oxidized, but are further protected from additional corrosion by a coating formed on the surface. Aluminum reacts with oxygen to form aluminum oxide, which remains tightly packed on the surface. The aluminum oxide prevents the interior of the aluminum from corroding. Not all corrosion is a result of reaction with oxygen. Copper corrodes by reaction with carbon dioxide to form copper(II) carbonate. This distinctive green compound is also called patina and prevents the copper underneath from further corrosion (see Statue of Liberty in the Figure below ). Q: Some metals, such as gold and platinum, do not corrode easily because they are very resistant to what? Choices: - evaporation - precipitation - heat - oxidation A:
Answer: oxidation
*Question*
Answer the following question given this paragraph: From the pharynx, the food moves into the esophagus. The esophagus is a long, narrow tube that passes food from the pharynx to the stomach by peristalsis. The esophagus has no other digestive functions. At the end of the esophagus, a muscle called a sphincter controls the entrance to the stomach. The sphincter opens to let food into the stomach and then closes again to prevent food from passing back into the esophagus. Q: What is the name of the muscle at the end of the esophagus? Choices: - neck - intestine - throat - sphincter A:
**Answer**
sphincter
(Question)
Answer the following question given this paragraph: Sedimentary rocks form from sediments that are cemented and compacted. Q: What type of rocks form from sediments that are cemented and compacted? Choices: - limestone - granite - crystalline - sedimentary A:
(Answer)
sedimentary