Bonding
BONUS REVIEW:
1. Calculate the average atomic mass for an unknown element whose isotopes have the following masses 23.985(78.99%), 24.986(10.00%), and 25.983 (11.01%).
2. What element is this?
1) 24.305 amu
2) Magnesium (Mg)
Name all three INTERmolecularforces from strongest to weakest. (Must name all 3 for points)
Hydrogen bonding
Dipole dipole
London dispersion
What is the name for Te4O5? (SPELLING COUNTS!)
Tetratellurium pentaoxide
What's an element in the same period as Oxygen (O)?
Li, Be, B, C, N, O, F, or Ne
Freezing lemonade is an example of a....
a) Physical Property
b) Chemical Property
c) Physical Change
d) Chemical Change
c) Physical Change
Name all 3 INTRAmolecular forces from strongest to weakest. (Must get all 3 for points)
Ionic Bonding
Covalent Bonding (can be split into polar and nonpolar, with nonpolar being the weakest)
What type of intermolecular force will the H2S experience?
Dipole dipole
What is the formula for Manganese (III) Carbonate?
Mn2(CO3)3
When a metal is heated, its electrons are excited to a higher energy level with 9.2 electron volts(eV) of energy. How much energy energy is released when it relaxes to its ground state.(Report your answer to the nearest 0.1 eV) (INCLUDE UNITS!)
9.2 eV
Which of these is matter?
a) ideas
b) air
c) space
d) sound
b) air
In a ____________ (ionic or covalent) bond, electrons are shared between ____________ (metals or nonmetals).
In a COVALENT bond, electrons are shared between NONMETALS.
What kind of intramolecular force is experienced in the compound CCl4?
a) ionic
b) metallic
c) polar covalent
d) nonpolar covalent
d) nonpolar covalent
Fluorine
1. What element is 1s2 2s2 2p5?
2. What is an element that will have similar properties to this one?
(MUST ANSWER BOTH CORRECTLY)
1. Fluorine
2. Any other element in that group (Cl, Br, I, At, Ts)
A density column is created with three substances, which substance would be at the bottom? Use the data below.
Substance A: 0.4 g/cm3
Substance B: 1.5 g/cm3
Substance C: 1.0 g/cm3
Substance B: 1.5 g/cm3 (it's the most dense so it will sink to the bottom)
In a ____________ (ionic or covalent) bond, a ___________ (metal or nonmetal) transfers electrons to a ____________ (metal or nonmetal).
MUST HAVE ALL THREE CORRECT FOR POINTS
Which compound is most likely to be a gas at room temperature?
a) NaCl
b) CaOH
c) H2O
d) SiCl4
d) SiCl4
Because it is nonpolar covalent (which will result in the weakest intermolecular force)
What is the name of NiBr2?
Nickel (II) Bromide
An atom has an atomic number of 21 and a mass of 45. How many neutrons does this atom have?
24
(mass - atomic number)
What type of chemical reaction always involves oxygen as a reactant and water and carbon dioxide as a product?
a) synthesis
b) decomposition
c) single replacement
d) double replacement
e) combustion
d) Combustion
What is happening to the electrons in a polar covalent bond?
Electrons are shared unequally
What type of intermolecular force will be experienced by CCl4?
Dispersion forces
What is the formula for Copper (II) Sulfate?
CuSO4 or Cu(SO4)
A new element is discovered and has 2 valence electrons and is a metal. What group would this element fit into?
a) Alkali metals
b) Alkaline earth metals
c) Halogens
d) Noble Gases
b) Alkaline earth metals
What is the mass of an object whose density is 4.97g/cm3 and volume is 15.25 cm3? Round to the one decimal place (0.1). REMEMBER UNITS (WRONG UNITS = NO POINTS)!
75.8 g