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43 Cards in this Set

  • Front
  • Back
Diamond and graphite are both substances made up of carbon but have different properties BECAUSE they are composed of different isotopes.
True, False
Na and Cl form an ionic bond BECAUSE Cl donates an electron to Na.
True, False
AgCl will not dissolve in a concentrated NaCl solution BECAUSE The chloride ions from NaCl suppress the solubility of AgCl.
True, True, CE
Hydrogen and deuterium are different elements BECAUSE they have a different number of protons.
False, False
On the periodic chart, atomic radius increases from left to right BECAUSE the number of protons is increasing.
False, True
An element with an atomic number of X and mass number of N has N-X neutrons BECAUSE elements have more neutrons than protons.
True, False
Radioactive decay has a characteristic half life BECAUSE first order kinetics are found in radioactive decay.
True, True, CE
Sulfur chemically resembles oxygen BECAUSE they are in the same period.
True, False
A nonelectrolyte does not ionize in water BECAUSE the solution does not conduct electricity.
True, True
SO3 diffuses more slowly than CO2 BECAUSE it has smaller bond angles.
True, True
Hydrogen bonding is stronger between noble gases than small electronegative atoms such as flurine BECAUSE noble gases have a large dipole moment.
False, False
An electron in a 3s subshell may be excited to jump into the 3p BECAUSE the Heisenberg uncertainty principle states that one cannot know what orbital an electron is in.
True, False
A positive delta G tells you that the reaction is spontaneous BECAUSE entropy always decreases in an isolaated system
False, False
An increase in pressure in a closed container with an ideal gas leads to a decrease in volume BECAUSE pressure and volume are proportional.
True, False
An amphoteric species acts as either an acid or a base BECAUSE it contains both hydrophobic and hydrophilic regions.
True, False
An indicator will allow you to determine whether a solution is acidic or basic BECAUSE it will change colors in solutions with different pHs.
True, True, CE
The ideal gas law does not hold under low temperatures and high pressure BECAUSE interactions between particles cannot be neglected under these conditions.
True, True, CE
An increase in entropy leads to a decrease of randomness BECAUSE the lower energy state of ordered crystals has a high entropy.
False, False
Two electrons in the 2s subshell must have opposite spins BECAUSE the Pauli Exclusion Principle states that no two electrons in the same atom can have identical quantum numbers.
True, True, CE
Atom A with 7 valence electrons forms AB2 with atom B with two valence electrons BECAUSE B donates its electrons to fill the outer shell of A.
False, True
CO2 is able to sublimate at atmospheric pressure BECAUSE its liquid form is impossible to produce.
True, False
A gas is more random than a liquid BECAUSE entropy increases from gas to liquid.
True, False
A mixture of pure metals is called an alloy. The melting point of an alloy will be lower than either of the component metals BECAUSE the new bonds are weaker.
True, True, CE
A salt dissolved in an organic solvent will be a good electrical conductor BECAUSE salts will not dissolve appreciably in an organic solvent.
False, True
A super saturated solution of glucose in boiling water crystallizes as it cools BECAUSE the solubility increases as the temperature decreases.
True, False
In a second order reaction with respect to A, when you double [A], the rate is quadrupled BECAUSE the rate equation is r=k[A]2 for such a reaction.
True, True, CE
Ca is a neutral atom BECAUSE it has the same number of protons and electrons.
True, True, CE
Salt dissolved in water depresses the freezing point BECAUSE the solute particles interfere with ice crystal formation.
True, True, CE
Ionic bonds are always stronger than covalent bonds BECAUSE they only break when bombarded with electrons.
False, False
Substances with hydrongen bonding tend to have unusually low boiling points BECAUSE extra energy is necessary to break the hydrogen bonds.
False, True
A solution with a pH of 12 has a higher concentration of hydroxide ions than one with a pH of 10 BECAUSE [H+][OH-] must equal 10-14.
True, True, CE
Catalysts decrease the rate of a chemical reaction BECAUSE catalysts decrease the activation energy.
False, True
The most important factor in determining the chemical properties of an element is the number of electrons in the outermost shell BECAUSE the number of electrons in the outer shell determines the bonding characteristics of the element.
True, True, CE
NH3 is a Lewis base BECAUSE it can accept a proton.
True, True
An element (X) with an atomic number of 16 has 14 electrons in X2- BECAUSE two protons bind the two outermost electrons.
False, False
Bromine is a stronger oxidizing agent than chlorine BECAUSE it has a large atomic radius.
False, True
An exothermic reaction has a positive delta H BECAUSE heat must be added to the system for the reaction to occur.
False, False
Iron is an element BECAUSE it cannot be broken into smaller units and retain its physical and chemical properties.
True, True, CE
CCl4 is a nonpolar compound BECAUSE the dipole moments are canceled out.
True, True, CE
A basic solution has more hydrogen ions than an acidic solution BECAUSE pH is defined as the -log[H+].
False, True
Atomic radii, decrease down a group BECAUSE the higher the atomic number within a group, the smaller the atom.
False, False
When an ideal gas is cooled its volume will increase BECAUSE temperature and volume are proportional.
False, True
A 0.2M solution of carbonic acid is a weaker conductor of electricity than a 0.2M solution of HBr BECAUSE in solutions with the same concentration of solute molecules, H2CO3 is less dissociated than HBr.
True, True, CE