Q: Gasoline, natural gas, fuel oil, diesel fuel, jet fuel, coal, kerosene, and propane are examples of what type of fule? Read this paragraph and choose the correct option from the provided answers: It is hard to overstate the importance of hydrocarbons to modern life. Hydrocarbons have even been called the "driving force of western civilization. " You saw some ways they are used in the opening image. Several other ways are pictured in the Figure below . The most important use of hydrocarbons is for fuel. Gasoline, natural gas, fuel oil, diesel fuel, jet fuel, coal, kerosene, and propane are just some of the commonly used hydrocarbon fuels. Hydrocarbons are also used to make things, including plastics and synthetic fabrics such as polyester. Choices: - electrolysis fuel - polymerization fuel - nuclear fue - hydrocarbon fuel A:
hydrocarbon fuel

Q: What are ionic substances completely held together by? Read this paragraph and choose the correct option from the provided answers: Ionic substances are completely held together by ionic bonds. The full charges of the ions (for example, Na + and Cl - in sodium chloride) cause electrostatic interactions that result in a stable crystal lattice. We saw in the previous chapter that most ionic compounds have high melting points, are brittle, are often soluble in water, and conduct electricity when melted or dissolved in water. Ionic compounds exist as extended, orderly arrangements of ions. As we will see, this is quite different from the structure of molecular substances, which take the form of collections of individual molecules. The atoms within a molecule are held very strongly together, but the interactions between different molecules are significantly weaker. Choices: - thermal bonds - localized bonds - magnetic bonds - ionic bonds A:
ionic bonds

Q: What type of rock contains concentrations of valuable minerals? Read this paragraph and choose the correct option from the provided answers: A mineral deposit that contains enough minerals to be mined for profit is called an ore . Ores are rocks that contain concentrations of valuable minerals. The bauxite shown in the Figure below is a rock that contains minerals that are used to make aluminum. Choices: - sedimentary - igneous - metamorphic - ores A:
ores