Q: When the volume of a gas is decreased, what happens to its pressure? Read this paragraph and choose the correct option from the provided answers: When the volume of a gas is decreased, its pressure is increased. Choices: - drops - LOWERS - STAYS THE SAME - increases A:
increases

Q: Some compounds containing hydrogen are members of an important class of substances known as what? Read this paragraph and choose the correct option from the provided answers: Binary Acids Some compounds containing hydrogen are members of an important class of substances known as acids. The chemistry of these compounds is explored in more detail in later chapters of this text, but for now, it will suffice to note that many acids release hydrogen ions, H+, when dissolved in water. To denote this distinct chemical property, a mixture of water with an acid is given a name derived from the compound's name. If the compound is a binary acid (comprised of hydrogen and one other nonmetallic element): 1. The word "hydrogen" is changed to the prefix hydro2. The other nonmetallic element name is modified by adding the suffix -ic 3. The word "acid" is added as a second word. Choices: - proteins - ions - bases - acids A:
acids

Q: The fuel that burns in a combustion reaction in many fossil fuels such as natural gas that consists of carbon hydrogen is known as what? Read this paragraph and choose the correct option from the provided answers: The fuel that burns in a combustion reaction is often a substance called a hydrocarbon. A hydrocarbon is a compound that contains only carbon (C) and hydrogen (H). Fossil fuels, such as natural gas, consist of hydrocarbons. Natural gas is a fuel that is commonly used in home furnaces and gas stoves (see Figure below ). The main component of natural gas is the hydrocarbon called methane (CH 4 ). The combustion of methane is represented by the equation:. Choices: - helium - catalyst - fossil - hydrocarbon A:
hydrocarbon