• Solids, liquids, and gases are the three most commonly accepted phases of matter. Explain the properties of each phase, including their relative energy.
• Explain the differences between an ideal gas and a real gas.
• Explain the process of sublimation. Name one substance that sublimes at room temperature and pressure.
• The mole is a counting number that allows scientists to describe how individual molecules and atoms react. If one mole of atoms or molecules is equal to 6.022 × 1023 atoms or molecules, how many molecules are in a 23.45 g sample of copper (II) hydroxide, Cu(OH)2? Express your answer to the correct number of significant figures. (MM of Cu(OH)2 is 97.562 g/mol). Be sure to show all steps completed to arrive at the answer.
• The density of water at 4.00°C is 0.967 g/mL. How many molecules of water are present in a 499.8 mL bottle of water? Express your answer to the correct number of significant figures. Be sure to show all steps completed to arrive at the answer.
• A manufacturing company is trying to produce a lightweight but strong cart for use by home gardeners. Explain which metal titanium (Ti), iron (Fe), or zinc (Zn) would be the best for this application and why?
• Combustion reactions are a notable source of carbon dioxide in the environment. Using the following balanced equation, how many grams of carbon dioxide are formed when 100.00 g of propane (C3H8) is burned? Express your answer to the correct number of significant figures. Be sure to show all steps completed to arrive at the answer.
