AP Chemistry Unit 3
Flashcard
•
Chemistry
•
11th - 12th Grade
•
Hard
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15 questions
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1.
FLASHCARD QUESTION
Front
What is a hydrogen bond?
Back
A hydrogen bond is a weak attraction between a hydrogen atom covalently bonded to a highly electronegative atom (like O, N, or F) and another electronegative atom.
2.
FLASHCARD QUESTION
Front
What is the formula to calculate frequency from wavelength?
Back
v = c / λ, where v is frequency, c is the speed of light (3.00 x 10^8 m/s), and λ is the wavelength.
3.
FLASHCARD QUESTION
Front
If a gas expands at constant temperature, what happens to its pressure?
Back
According to Boyle's Law, if the volume increases, the pressure decreases, provided the temperature and amount of gas remain constant.
4.
FLASHCARD QUESTION
Front
Which substance has the weakest intermolecular forces: CH4, NaCl, H2O, or MgF2?
Back
CH4 has the weakest intermolecular forces because it is a nonpolar molecule.
5.
FLASHCARD QUESTION
Front
How does increasing pressure affect the solubility of a gas in a liquid?
Back
Increasing pressure increases the solubility of a gas in a liquid, as described by Henry's Law.
6.
FLASHCARD QUESTION
Front
What is the relationship between temperature and gas solubility?
Back
Generally, increasing temperature decreases the solubility of gases in liquids.
7.
FLASHCARD QUESTION
Front
Define intermolecular forces.
Back
Intermolecular forces are forces of attraction or repulsion between neighboring particles (atoms, molecules, or ions).
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