General Chemistry Flashcards
7 cards from real OAT practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.
Read the first 7 General Chemistry flashcards as text
Which quantum number describes the shape of an atomic orbital?
Answer: Angular momentum quantum number (l)
The angular momentum quantum number (l) determines the shape of the orbital (s, p, d, f).
A buffer solution is BEST described as one that:
Answer: Resists changes in pH upon addition of small amounts of acid or base
A buffer resists pH changes by containing a weak acid and its conjugate base (or weak base and conjugate acid).
What is the oxidation state of sulfur in H2SO4?
Answer: +6
In H2SO4, hydrogen is +1 and oxygen is -2, so sulfur must be +6 to balance the neutral molecule.
According to VSEPR theory, what is the molecular geometry of SF4?
Answer: See-saw
SF4 has 4 bonding pairs and 1 lone pair on sulfur, giving it a see-saw (seesaw) geometry.
Which of the following has the highest boiling point?
Answer: NH3
NH3 has the highest boiling point due to strong intermolecular hydrogen bonding.
For a reaction with ΔG = 0, which statement is TRUE?
Answer: The system is at equilibrium
ΔG = 0 indicates the system is at equilibrium, where forward and reverse reaction rates are equal.
Which type of radioactive decay increases the atomic number by 1?
Answer: Beta-minus decay
Beta-minus decay converts a neutron to a proton and emits an electron, increasing atomic number by 1.