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30 terms

Chemistry Final

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What is the trend for atomic radii on the periodic table?
Atomic radii increase as you go down and left on the periodic table.
Which element has the largest atomic radius on the periodic table? Smallest?
Francium (Fr) has the largest atomic radius on the periodic table. Fluorine (F) has the smallest atomic radius on the periodic table.
What is ionization energy?
Ionization energy is the energy needed to remove the most loosely-held electron from an atom.
What is the trend for ionization energy on the periodic table?
Ionization energy increases as you go up and right on the periodic table.
Which element has the highest ionization energy on the periodic table? Lowest?
Helium (He) has the highest ionization energy on the periodic table. Francium (Fr) has the lowest ionization energy on the periodic table.
What is electron affinity?
Electron affinity is the attraction of an atom for an electron.
What is the trend for electron affinity on the periodic table?
Electron affinity increases as you go up and right on the periodic table.
What is electronegativity?
Electronegativity is the ability of an atom to attract electrons from a bond.
What is the trend for electronegativity on the periodic table?
Electronegativity increases as you go up and right on the periodic table. (Not including noble gases.)
Which element has the highest electronegativity on the periodic table? Lowest?
Fluorine (F) has the highest electronegativity on the periodic table. Francium (Fr) has the lowest electronegativity on the periodic tale.
Which type of bond exchanges electrons?
An ionic bond.
Which type of bond shares electrons?
A covalent bond.
All stoichiometric calculations involving equations use _____ ratios.
mole
When solving stoichiometric problems, you must first ______ the equation.
balance
Balanced equations give the ______ numbers of moles of substances.
relative
_______ in chemical equations provide mole ratios that can be used as conversion factors.
Coefficients
The conversion factor for converting between mass and moles is the __________ of the substance.
molar mass
In making calculations involving _______ you must convert volume to mass.
liquids
To convert from volume to mass, you can use the _______ of the substance as the conversion factor.
density
When calculating the number of particles, you can use __________ as the conversion factor.
Avogadro's number
A(n) ______ reactant is not completely used up in a chemical reaction.
excess
A(n) ______ reactant is used up first and thus controls the quantity of ______ that can be formed in a chemical reaction.
limiting, product
The reactant that runs out first is the ______ reactant.
limiting
The limiting reactant should be used in __________ calculations to determine the maximum amount of product expected.
stoichiometric
Cost is a factor in selecting the _______ reactant.
limiting
In industry, the least expensive reactant is usually used as the ______ reactant. In this way, the more expensive reactant is completely used up, while some of the cheaper reactant is left over.
excess
The ________ yield is a way to describe reaction efficiency.
percentage
The ______ yield must be measured experimentally.
actual
The percentage yield described how close the _______ yield is to the _________ yield.
actual, theoretical
The percentage yield figures can be used to predict what the ______ yield will likely be.
actual