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CART Cheat Sheet 2026

The 30 highest-yield CART facts, distilled from real exam questions. Print it, save it as a PDF, or study it here β€” free, no sign-up.

50 questions
60 min time limit
50% to pass
  1. For the reaction: Nβ‚‚(g) + 3Hβ‚‚(g) β‡Œ 2NH₃(g), the equilibrium constant expression Kc is: β†’ [NH₃]Β² / ([Nβ‚‚][Hβ‚‚]Β³)
  2. Which factor most directly determines whether a nucleus is stable or radioactive? β†’ The ratio of neutrons to protons in the nucleus
  3. In beta-minus decay, a neutron is converted inside the nucleus into: β†’ A proton and an emitted electron (beta particle)
  4. A student needs to prepare 500.0 mL of a 0.500 M sodium chloride (NaCl) solution. How many grams of NaCl are required? (Molar Mass of NaCl β‰ˆ 58.44 g/mol) β†’ 14.6 g
  5. Which calorimetry equation relates heat, mass, specific heat, and temperature change? β†’ q = mcΞ”T
  6. What particles make up an alpha particle? β†’ 2 protons and 2 neutrons
  7. What is a nuclear chain reaction? β†’ A process where neutrons from fission trigger additional fissions, releasing more neutrons
  8. What is the name of the polyatomic ion with the formula ClO₂⁻? β†’ Chlorite
  9. Le Chatelier's Principle predicts that for an exothermic reaction at equilibrium, increasing temperature will: β†’ Shift equilibrium toward reactants
  10. An atom has an atomic number of 15 and a mass number of 31. How many protons, neutrons, and electrons does a neutral atom of this element have? β†’ 15 protons, 16 neutrons, 15 electrons
  11. Which graph best represents the concentration changes of reactants and products as a reversible reaction reaches equilibrium? β†’ Both concentrations level off and remain constant after equilibrium is reached
  12. A chemical reaction must be performed at a temperature of 398 K. What is this temperature in degrees Celsius (Β°C)? β†’ 125Β°C
  13. Which of the following samples contains the greatest number of moles of the substance? β†’ 90.0 g of Hβ‚‚O (Molar Mass β‰ˆ 18 g/mol)
  14. Which of the following processes is endothermic? β†’ Melting of ice
  15. A hand warmer packet releases heat as iron oxidizes. This is an example of a(n): β†’ Exothermic chemical reaction
  16. Which statement about a catalyst is correct? β†’ It provides an alternate pathway with lower activation energy
  17. At chemical equilibrium, which of the following is true? β†’ The forward and reverse reaction rates are equal
  18. Which of the following best describes the mass number of an atom? β†’ The sum of the protons and neutrons in the nucleus
  19. Gamma radiation differs from alpha and beta radiation in that gamma radiation: β†’ Is electromagnetic radiation with no mass or charge
  20. Which type of radiation is stopped most easily and cannot penetrate human skin? β†’ Alpha particles
  21. Which symbol represents the heat of a reaction measured at constant volume? β†’ Ξ”U (or Ξ”E)
  22. If a radioactive sample has a half-life of 5 years, what fraction of the original sample remains after 15 years? β†’ 1/8
  23. Consider the elements Fluorine (F), Carbon (C), and Oxygen (O). Which of the following correctly lists these elements in order of increasing atomic radius? β†’ F, O, C
  24. If 8 moles of Al react with 3 moles of Feβ‚‚O₃ according to the equation: 2Al + Feβ‚‚O₃ β†’ 2Fe + Alβ‚‚O₃, what is the limiting reactant? β†’ Feβ‚‚O₃
  25. Which of the following is a balanced equation for the combustion of methane (CHβ‚„)? β†’ CHβ‚„ + 2Oβ‚‚ β†’ COβ‚‚ + 2Hβ‚‚O
  26. According to VSEPR theory, what is the molecular geometry of a molecule with a central atom that has two bonding pairs and two lone pairs of electrons? β†’ Bent
  27. What is the molar mass of iron(III) sulfate, Feβ‚‚(SOβ‚„)₃? β†’ 399.88 g/mol
  28. Which of the following represents a double displacement reaction? β†’ AB + CD β†’ AD + CB
  29. In the reaction: 4Fe + 3Oβ‚‚ β†’ 2Feβ‚‚O₃, what is the mole ratio of iron (Fe) to ferric oxide (Feβ‚‚O₃)? β†’ 4:2
  30. What type of reaction is represented by the equation: 2Hβ‚‚ + Oβ‚‚ β†’ 2Hβ‚‚O? β†’ Synthesis reaction
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