*Question*
Q: Brass and bronze are examples of what type of mixture composed of two or more elements, at least one of which is a metal? Read this paragraph and choose the correct option from the provided answers: An alloy is a mixture composed of two or more elements, at least one of which is a metal. You are probably familiar with some alloys such as brass and bronze. Brass is an alloy of copper and zinc. Bronze is an alloy of copper and tin. Alloys are commonly used in manufactured items because the properties of these metal mixtures are often superior to a pure metal. Bronze is harder than copper and more easily cast. Brass is very malleable and its acoustic properties make it useful for musical instruments. Choices: - halloid - compound - metalloid - alloy A:
**Answer**
alloy

*Question*
Q: Does the stream-lined body featured on most fish increase or decrease water resistance? Read this paragraph and choose the correct option from the provided answers: Fish typically have a stream-lined body. This reduces water resistance. Choices: - quickens - precipitates - increases - decrease A:
**Answer**
decrease

*Question*
Q: During which stage of development do all the major organs begin to form? Read this paragraph and choose the correct option from the provided answers: After cells differentiate, all the major organs begin to form during the remaining weeks of embryonic development. A few of the developments that occur in the embryo during weeks 4 through 8 are listed in Figure below . As the embryo develops, it also grows in size. By the eighth week of development, the embryo is about 30 millimeters (just over 1 inch) in length. It may also have begun to move. Choices: - third trimester - nascent - transgenic - embryonic A:
**Answer**
embryonic

*Question*
Q: What is the molecular formula of carbon dioxide? Read this paragraph and choose the correct option from the provided answers: The molecular formula of carbon dioxide is CO 2 . One molecule of carbon dioxide consists of 1 atom of carbon and 2 atoms of oxygen. We can calculate the molar mass of carbon dioxide by adding together the molar masses of each atom present in the compound. Choices: - c2o - h2o - cl2 - co 2 A:
**Answer**
co 2