Back to MCAS Guide
The MCAS Chemistry Test (STE): Topics and Strategy

The MCAS Chemistry Test (STE): Topics and Strategy

April 30, 2026 24 views
ENKOESVNCN

Chemistry is one of the four high-school Science & Technology/Engineering (STE) MCAS tests. What makes it distinctive is the balance it strikes between conceptual understanding and quantitative problem-solving — you need both.

How the framework organizes it

Matter & its interactions
Atomic structure, the periodic table and trends, bonding, reaction types, and balancing equations.
Stoichiometry
The mole concept, mole–mass conversions, and relating amounts via balanced equations.
Energy
Thermochemistry (endo- vs. exothermic), conservation of energy, and reaction rates.
States of matter & solutions
Gas behavior, concentration and molarity, and solution properties.

Concept questions vs. calculation questions

Balance both
The test pairs two kinds of items. Conceptual questions ask you to predict or explain — why an element sits where it does, what bond forms, why a reaction releases heat. Quantitative questions ask you to compute — mole conversions, stoichiometry, molarity. Prepare for both: memorizers stumble on the math, and number-crunchers miss the “why.”

Use the provided materials

A periodic table (and typically a reference sheet of constants and formulas) is provided. The skill isn't memorizing the table — it's reading it: locating metals, nonmetals, and metalloids, and using position to predict trends in atomic radius, ionization energy, and likely ion charge.

Important on exam day
Answer every question — there's no penalty for guessing. Use the provided periodic table and reference sheet, and keep units and significant figures consistent in every calculation.
Key takeaways
  • Chemistry is one of four STE options.
  • Master the mole early — most calculations depend on it.
  • Balance conceptual understanding with quantitative practice.
  • Learn to read the provided periodic table, not memorize it.

MCAS Practice™ is independent and is not affiliated with, endorsed by, or sponsored by the Massachusetts Department of Elementary and Secondary Education (DESE). Our practice questions are independently authored and are multiple-choice only — the official MCAS also includes open-response and essay questions, so our material is not identical to, and not a substitute for, the real exam. Test format, timing, and score thresholds can change; always confirm current details with DESE or your school.

Ready to start practicing?

Try free sample questions and see how prepared you are.

Browse Subjects