The elements on the periodic table are arranged in order of increasing
Atomic Number
100
Which particles may be gained, lost, or shared by an atom when it forms a chemical bond?
electrons
100
What makes a mixture homogeneous?
It is aqueous
100
Which element must be present in an organic compound?
Carbon
100
Standard Pressure is equal to
1 atm or 101.3 kPa
200
As atomic number increases, in group 15, atomic radius
decreases
200
Electronegativity is a measure of an atom's ability to
attract electrons in the bond between the atom and another atom
200
A solution in which the crystallization rate of the solute equals the dissolving rate of the solute must be
saturated
200
The symbol = represents
Two pairs of shared electrons (A double bond).
200
A rigid cylinder contains a sample of gas at STP. What is the pressure of this gas after the sample is heated to 410 K?
1.5 atm
300
Based on electronegativity values, which type of elements tend to have the greatest attraction for electrons in a bond?
Nonmetals
300
An atom of argon rarely bonds to an atom of another element because an argon atom has
8 valance electrons
300
Based on the Solubility Curves chemistry reference table, which substance is most soluble at 60 degrees Celsius
NH4Cl
300
A molecule of ethane and a molecule of ethene both have the same?
Number of carbon atoms
300
A sample of H2(g) at STP contains 9.03x10^23 molecules. The volume of the sample is
33.6 Liters
400
Noble gasses have a full
Valance Shell
400
Molecules in a sample of NH3(l) are held closely together by intermolecular forces
caused by unequal charge distribution
400
What change will cause the solubility of KNO3(s) to increase?
Increasing temperature
400
What is the total number of hydrogen atoms in a molecule of butene?
Eight
400
A sealed, rigid 1.0-liter cylinder contains He gas at STP. An identical sealed container contains Ne gas at STP. These two containers have the same number of
atoms
500
How many moles are in 5.6 liters of a gas at STP?
.25 mole
500
A solid substance is an excellent conductor of electricity. The chemical bonds in this substance are most likely
metallic because valance electrons are mobile
500
What is the total number of grams of potassium chloride needed to saturate exactly 300 grams of water at 10 degrees Celsius
90 grams
500
The process of joining many small molecules into larger molecules is called
Polymerization
500
The volume of a 1.0-mole sample of an ideal gas will decrease when the