What is the ground-state electron configuration of a neutral sulfur atom (atomic number 16)?
Structure Of Matter
Question · Medium
Two atoms that have the same number of protons but different numbers of neutrons are called what?
Question · Easy
Chapter 1: Introduction & Exam Strategy
1.1 CLEP Chemistry Exam Structure, Calculator & Periodic Table
Study guide
According to VSEPR theory, what is the molecular geometry of a methane (CH4) molecule?
Which type of chemical bond results from the electrostatic attraction between oppositely charged ions?
As you move from left to right across a period in the periodic table, what generally happens to the atomic radius?
How many valence electrons does a neutral atom of phosphorus (group 15) have?
1.2 Quantitative Foundations: Units, Dimensional Analysis & Significant Figures
Which subatomic particle has a mass approximately equal to that of a proton but carries no electrical charge?
In the nuclear equation for the alpha decay of uranium-238, what is the other product besides thorium-234?
Which of the following best explains why water (H2O) is a polar molecule?
What is the maximum number of electrons that can occupy the second principal energy level (n = 2)?
1.3 Effective Study Strategies & Recommended Course Pathway
Which element has the highest first ionization energy?
A double covalent bond consists of how many shared pairs of electrons?
Which quantum number specifies the shape of an atomic orbital?
Question · Hard
Which of the following species is isoelectronic with the noble gas neon (10 electrons)?
Chapter 2: Atomic Theory, Isotopes & Nuclear Chemistry
2.1 Evolution of Atomic Theory, Subatomic Particles & Mass Spectrometry
The element with the electron configuration [Ar]4s2 3d10 4p3 belongs to which group and period?
Which intermolecular force is responsible for the unusually high boiling point of water relative to other molecules of similar size?
What is the formal name of the rule stating that atoms tend to gain, lose, or share electrons to achieve eight valence electrons?
Which of the following correctly ranks electronegativity from highest to lowest?
2.2 Quantum Numbers, Atomic Spectra & Electron Configurations
How many unpaired electrons are present in a ground-state nitrogen atom (atomic number 7)?
The half-life of a radioactive isotope is 8 days. If you start with 80 grams, approximately how much remains after 24 days?
According to the ideal gas law, if the temperature of a fixed amount of gas at constant volume is doubled (in kelvins), what happens to its pressure?
States Of Matter
What volume does 1 mole of an ideal gas occupy at standard temperature and pressure (STP)?
2.3 Nuclear Chemistry: Radiation, Decay Kinetics & Nuclear Reactions
Which statement is a postulate of the kinetic-molecular theory of ideal gases?
What is the molarity of a solution containing 0.5 mole of solute dissolved in enough water to make 250 milliliters of solution?
The direct change of a substance from the solid phase to the gas phase without passing through the liquid phase is called what?
A gas sample occupies 4.0 liters at 2.0 atm. If the temperature is held constant and the pressure is increased to 8.0 atm, what is the new volume?
Chapter 3: Periodic Relationships & Periodicity
3.1 Periodic Law & Periodic Table Organization
Adding a nonvolatile solute to a pure solvent has which effect on the solution's boiling point?
According to Dalton's law of partial pressures, the total pressure of a mixture of nonreacting gases equals what?
Which type of solid is characterized by a regular, repeating three-dimensional arrangement of ions held by electrostatic forces, such as NaCl?
At a given temperature, which gas will effuse most rapidly according to Graham's law?
3.2 Periodic Trends: Atomic/Ionic Radii, Ionization Energy, Electron Affinity & Electronegativity
What is the term for the temperature and pressure at which the solid, liquid, and gas phases of a substance coexist in equilibrium?
If 1.0 mole of NaCl is dissolved in water, approximately how many moles of dissolved particles result, assuming complete dissociation?
A liquid boils when its vapor pressure becomes equal to what?
Which unit of concentration is defined as moles of solute per kilogram of solvent?
3.3 Oxidation States & Valence Electron Trends
Using PV = nRT, how many moles of an ideal gas occupy 24.6 liters at 1.0 atm and 300 K? (R = 0.0821 L atm / mol K)
Which of the following best describes why real gases deviate from ideal behavior at high pressure and low temperature?
The amount of energy required to convert one gram of a liquid to a gas at its boiling point is known as the heat of what?
On a heating curve for water, what happens to the temperature while ice is melting at 0 degrees Celsius?
Chapter 4: Chemical Bonding & Molecular Structure
4.1 Ionic, Covalent, Polar Covalent & Metallic Bonding
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