To prepare for the lab final evaluate the following concepts. Make sure you understand and can work problems related to each:
Safety and General Lab Practices:
- Explain general laboratory practices related to safety, container labeling, chemical disposal and instrument operation.
Dimensional Analysis Lab:
- Define and memorize the conversion factors between base units and units containing (centi, milli, micro, and kilo) prefixes
- Calculate a problem similar to any of the post-lab questions
- Report answers in scientific notation.
- Report answers to the correct number of significant figures.
Density of Sucrose Solution Lab:
- Define and calculate percent error.
- Answer questions similar to prelab questions 3-4.
- Determine how specific lab errors could contribute to the density calculation.
- Calculate the density of a solution.
- Use the density of a solution to determine the grams of solute present in a solution.
Percent Composition Lab:
- Define and calculate percent composition of an element in a compound..
- Answer questions similar to prelab question 3, postlab question 1,2 or 4.
- Use data to determine the mol ratio of metal to H2.
- Use lab data to calculate molar mass of an unknown metal.
Reactions of Calcium Lab:
- Use reaction stoichiometry to calculate quantities in chemical reactions.
- Balance chemical equations.
- Answer questions similar to pre-lab 1-2, post-lab 1-2.
Limiting Reactant Lab:
- Discuss the concepts of limiting reactant, theoretical yield and percent yield.
- Calculate theorietical yield.
- Determine the limiting reactant.
- Calculate percent yield.
- Perform calculations similar to those in pre-lab question 1, post-lab question 2, and the “beaker” calculations.
Reactions and Solubility Lab:
- Classify chemical reactions by type.
- Write the net ionic equation for a reaction.
- Discuss the evidense that a chemical reaction has taken place.
- Predict the precipitate in a chemical reaction.
- Be able to answer questions similar to pre-lab question 2-3, post-lab questions, and classification similar to the data section.
Titration of a Carbonated Beverage Lab:
- Calculate the concentration of an NaOH solution given the volume used to titrate a known mass of KHP.
- Calculate the concentration of citric acid in a soda given the volume and molarity of a NaOH solution.
- Answer questions similar to pre-lab 2-3, post-lab 1-3.
Molar Mass of a Volatile Liquid Lab:
- Calculate molar mass using the ideal gas law and laboratory data.
- Answer questions similar to pre-lab question 2 or post-lab question 1.
- Determine whether a reaction is endothermic or exothermic.
- Determine the best ionic compound of to use in a heat pack for treating frostbite based on your experimental results.
- Calculate the average heat capacity of your calorimeter.
- Calculate the specific heat of a metal.
- Answer questions similar to pre-lab 3-4, post-lab 5-6.
Hess’ Law Lab:
- Use Hess’ Law to calculate the enthalpy for a reaction.
Molecular Geometry Lab:
- Determine the shape of a molecule using the VSEPR.
- Draw the Lewis structures of a molecule including bond angles and formal charges.
- If given any molecule, be able to fill in the chart in your data sheets for that molecule.
- Answer questions similar to pre-lab 1-5, post-lab 1-2.