Check-In Quiz 2
Exams are spaced roughly 1 month apart in this course. Check-In Quizzes were written to cover the material between each exam as a sort of road marker between major assessments. While these quizzes are not graded or collected, they can be used as mini-exams to test your self half way through a unit. Think of it as an informal way to check your understanding halc way through to the next exam.
Check-In Quiz 2 (Fall 2013) Download Check-In Quiz 2 (Fall 2013) + ANSWER KEY Download ANSWER KEY
Check-In Quiz 2 (Fall 2014) Download Check-In Quiz 2 (Fall 2014) + ANSWER KEY Download ANSWER KEY
Empirical & Molecular Formulas:
- Know the difference between empirical and molecular formulas
- Know how to calculate empirical formulas from percent composition by mass
- Know how to calculate molecular formulas starting from the empirical formula and molar mass
Chemical Equations:
- Know the difference between the stoichiometric coefficients (the numbers specifying how many of each reactant and product are involved in the reaction) and the subscripts in a formula (which specify the number of each atom within the substance)
- Be able to balance each of the reaction types we have studied:
- Combustion:
- Know the products from the complete burning of hydrocarbons:
- Carbon Dioxide & Water
- Decomposition:
- Breaking down a complex substance into multiple smaller substances
- Be able to write the decomposition of a compound to its component elements:
- Remember the elements that exist as diatomic molecules (H2, N2, O2, F2, Cl2, Br2, I2)
- Synthesis:
- Combining multiple substances to make one more complex substance
- Double Replacement:
- Predict the products of the reaction:
- Be sure to write the products with the correct ratio of positive and negative charges to generate NEUTRAL ionic products
- Be able to use the Solubility Chart to predict the phase of each component involved in a reaction:
- Use phase symbols to specify aqueous solutions (aq), solids (s), liquids (l) and gases (g)