MTTC Chemistry (018) case studies
MTTC Chemistry (018) · Put your knowledge to work in context.
Chemistry (018) is one of the subject tests in the Michigan Test for Teacher Certification (MTTC) program, the testing system Michigan uses as part of its teacher certification process. Candidates who are preparing to teach chemistry register for test code 018; on the official MTTC test list it sits alongside the other science assessments, including Biology (017), Physics (019), Physical Science (097), Earth/Space Science (020), and Integrated Science (Secondary) (094). This page is independent study material. We are not affiliated with Pearson, the Michigan Department of Education, or the MTTC program, and we neither administer the test nor issue scores. The MTTC Chemistry (018) case studies are 5 cases and about 2,361 words.
1Standardizing NaOH: When to Reject a Titration Trial
A student standardizes a NaOH solution using potassium hydrogen phthalate (KHP, molar mass 204.22 g/mol) and phenolphthalein. Four KHP samples are weighed: 0.4082 g, 0.4110 g, 0.4095 g, and 0.4078 g.
520 words, about 3 min2Assigning an Element from Photoelectron Spectroscopy
A neutral unknown element is analyzed by photoelectron spectroscopy (PES). The spectrum shows five peaks with relative areas 2:2:6:2:1, corresponding to electrons removed from the 1s, 2s, 2p, 3s, and 3p subshells.
492 words, about 2 min3Choosing a TLC Solvent for an Analgesic Mixture
A student uses silica-gel thin-layer chromatography (TLC) to separate a mixture of three analgesics: aspirin (acetylsalicylic acid), acetaminophen, and caffeine. Standards and the mixture are spotted on the same plate.
503 words, about 3 min4Limiting Reactant and Percent Yield in a Calcium Carbonate Precipitation
A student mixes 25.0 mL of 0.200 M CaCl2 solution with 30.0 mL of 0.150 M Na2CO3 solution. A white precipitate of CaCO3 forms.
437 words, about 2 min5Le Chatelier and Kc in the Cobalt Chloride Equilibrium
A student dissolves CoCl2·6H2O in deionized water, producing a pink solution. The relevant equilibrium is [Co(H2O)6]2+(aq) + 4 Cl−(aq) ⇌ [CoCl4]2−(aq) + 6 H2O(l).
409 words, about 2 min