*Question*
Answer the following question given this paragraph: The name of this molecule is 2-methylpropane. The molecular formula is still C 4 H 10 , which is the same formula as butane. A structural isomer is one of multiple molecules that have the same molecular formula, but different structural formulas. Butane and 2-methylpropane are structural isomers. Q: The molecular formula is still c 4 h 10 , which is the same formula as? Choices: - chlorine - carbon hydroxide - propane - butane A:
**Answer**
butane

*Question*
Answer the following question given this paragraph: The carbonyl group, a carbon-to-oxygen double bond, is the defining feature ofaldehydes and ketones. In aldehydes at least one bond on the carbonyl group is a carbon-to-hydrogen bond; in ketones, both available bonds on the carbonyl carbon atom are carbon-to-carbon bonds. Aldehydes are synthesized by the oxidation of primary alcohols. The aldehyde can be further oxidized to a carboxylic acid. Ketones are prepared by the oxidation of secondary alcohols. Mild oxidizing agents oxidize aldehydes to carboxylic acids. Ketones are not oxidized by these reagents. A thiol is a compound with an SH functional group. Q: What are prepared by the oxidation of secondary alcohols? Choices: - protons - more alcohol - ions - ketones A:
**Answer**
ketones

*Question*
Answer the following question given this paragraph: Density describes how much matter is in a certain amount of space. Substances that have more matter packed into a given space have higher densities. The water in a drinking glass has the same density as the water in a bathtub or swimming pool. All substances have characteristic densities, which does not depend on how much of a substance you have. Q: What describes how much matter is in a certain amount of space? Choices: - volume - mass - viscosity - density A:
**Answer**
density

*Question*
Answer the following question given this paragraph: Q: Adaptations that go along with the active, carnivorous lifestyle of sharks are known as? Choices: - acute parameters - similar senses - Relative traits - acute senses A:
**Answer**
acute senses