Back2basics
Gas grab bag
Bondage
What's your reaction?
Periodic potpourri
100
the term for different trials which are highly reproducible from one to another
What is precision?
100
when Pressure goes up, it might be because this has gone down.
What is volume of a gas?
100
8 valence electrons
What is the optimum number of outer shell electrons for each atom in a covalent compound?
100
Oxygen is always a reactant. Heat is evolved.
What is a combustion reaction?
100
Group of elements with 7 valence electrons
What are the halogens?
200
the term for an answer that is very close to a recognized standard
What is accuracy?
200
0.0821 L-atm / (mole - K)
What is the Gas constant?
200
a bond based on electrostatic attraction between oppositely charged ions
What is an ionic bond?
200
the reactant breaks down to smaller molecules
What is a decomposition reaction?
200
group of elements with some metallic and some non-metallic physical and chemical properties
What are the metalloids?
300
the presence of a Roman numeral in parentheses in the name of a compound
What is necessary if (and only if) the cation in an ionic compound has more than one possible positive charge - seen with many of the transition metals.
300
the result of increasing the number of gas molecules
What is an increase in pressure (or volume)?
300
Sum of charges must add up to Zero.
What is the requirement for how to decide the number of cations and anions in an ionic compound?
300
net ionic equation
What is the description for the actual reaction - formation of a new solid compound- that occurs in a double displacement reaction?
300
term for the ability to attract an additional electron, F is the highest, followed by other nonmetals in the upper right hand corner, and Cs is the lowest, follow by other metals on the left hand side of the chart
What is electronegativity and how do the elements rate on this scale?
400
Order of listing ions in the formula for an ionic compound
What is Cation 1st, anion 2nd?
400
gas molecules with a greater kinetic energy
What is the result of a temperature increase?
400
Polar covalent bond
What is a covalent bond between 2 atoms with an electronegativity difference between 0.6 and 1.9?
400
the process of combining molecules or ions to make a new compound or molecule from components
What is a synthesis reaction?
400
Radius gets smaller as you go from left to right
What is the trend in atomic radius for a single row of elements?
500
molecular mass
What is the sum of all of the atomic masses for each atom in a molecular formula?
500
caused by an increase in temperature
What is an increase in pressure (or volume)?
500
a covalent bond in which one of the atoms in the bond puts up both electrons for the bond
What is a coordiante covalent bond between a Group V, VI or VII atom and another atom?
500
reactions according to the Activity series
What is a single replacement reaction between an element and an ionic compound?
500
the name for elements in the "d" block - called this name, because they have more than one possible ionic charge and they can transition between the two different ions
Transition metals - where and why the name?
M
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