Comprehensive Chemistry Review: Atomic Structure, Periodic Table, Bonding, and Reactions
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21 Terms
What is the atomic radius comparison between potassium and calcium?
The radius of the potassium atom is larger because of its larger nuclear charge.
Which element is malleable and ductile?
Gold (Au) is malleable and ductile.
What do the elements in Period 3 have in common?
They all have the same number of principal energy levels containing electrons.
Which element requires the least energy to remove its most loosely bound electron?
Barium (Ba) requires the least amount of energy.
What is the balanced equation for Cu2S + O2?
The coefficient of O2 when balanced is 5.
What characterizes a nonpolar covalent bond?
In a nonpolar covalent bond, electrons are shared equally by two atoms.
Why does H2O have a higher boiling point than H2S?
The higher boiling point of H2O is due to hydrogen bonding.
What is the correct name for CrPO?
The correct name is Chromium (III) Phosphate.
How many pairs of shared electrons are in a nitrogen molecule?
There are 3 pairs of shared electrons in a nitrogen molecule.
Which substance is classified as an Arrhenius base?
Sodium hydroxide (NaOH) is classified as an Arrhenius base.
How many protons, neutrons, and electrons are in Br-80?
Br-80 has 35 protons, 45 neutrons, and 35 electrons.
What is the electron configuration for chromium?
The electron configuration for chromium is [Ar] 4s2 3d4.
Which element has three occupied energy levels and five valence electrons?
The element is phosphorus.
What is the molarity of a solution with 4.00 grams of NaCl in 0.500 L?
The molarity is 0.14 M.
What is the volume of a 0.40 mole sample of nitrogen gas at 25°C and 3.00 atm?
The volume is 3.26 L.
What is the name of the compound NaI?
The name is Sodium Iodide.
What is the formula for potassium carbonate?
The formula is K2CO3.
What type of bonding exists in NaCl?
NaCl has ionic bonding.
What is the shape of the CO2 molecule?
The shape of CO2 is linear and it is nonpolar.
What type of intermolecular forces are present in NH3?
NH3 exhibits hydrogen bonding.
What are the differences between ionic and molecular substances?
Ionic substances generally have higher melting points and conduct electricity in solution, while molecular substances have lower melting points and do not conduct electricity.