MuHahahaha
Lewis structures/ geometry
Intermolecular Forces
Polarity
the easy questions, if you know them
100
Describe fission vs fusion
In fusion, two small nuclei combine to form a larger nucleus
In fission, a larger nuclei is split into smaller nuclei and releases energy
100
Draw the Lewis structures for CCl4, name the electron and molecular geometry
tetrahedral
100
list the intermolecular forces
dipole–dipole attractions, hydrogen bonding, dispersion forces
100
Is the bond between HBr polar or nonpolar
polar
100
How many moles of water, H2O, contain 2.60 × 1023 molecules of water?
0.432 mol
200
Why is CCl4 nonpolar?
What is the shape of the molecule is tetrahedral, so all of the polar bonds cancel each other out, and the overall molecule is nonpolar
200
Draw the Lewis structures for H2S, name the electron and molecular geometry
electron - tetrahedral
molecular - bent
200
Indicate the major type of intermolecular forces in each of the following:
H2S, H2O
dipole-dipole, hydrogen
200
Determine if the following would be polar or nonpolar: Cl2
nonpolar (only nonpolar bonds)
200
How many Li atoms are in 4.5 moles of Li
2.71*1023 atoms
300
Which element has the highest ionization energy in the D block?
gold
300
Draw the Lewis structures for Cl2O, name the electron and molecular geometry
electron- tetrahedral
molecular - bent
300
Indicate the major type of intermolecular forces—dipole–dipole attractions, hydrogen bonds, or dispersion forces—expected of each of the following:
HF, Br2, PCl3
hydrogen, dispersion, dipole-dipole
300
Determine if the following would be polar or nonpolar: SiCl4
nonpolar (polar covalent bonds cancel each other out)
300
Calculate the mass, in grams, of 1.50 moles of Na
34.5 g
400
What block on the periodic table contains most of the nonmetals
The P block
400
Draw the Lewis structures for BH4-, name the electron and molecular geometry
tetrahedral
400
identify which has the strongest intermolecular forces between the particles:
CH3OH
CO
CF4
CH3CH3
CH3OH - hydrogen bonding
400
Determine if the following would be polar or nonpolar:
PCl3
polar (all polar covalent bonds that don't cancel out)
400
Which has a higher boiling point: HF or H2O, Why do you think this is?
H2O because the intermolecular bonds are able to line up better into an stronger form. H-F has three negative areas and one positive area. Water is 2 and 2.
500
What does VSEPR stand for? Explain VSEPR in your own words.
What is valence-shell electron-pair repulsion? What is the valence electrons in atoms that are bonded to each other repel each other and try to get as far away from each other as possible - this determines the shape of the molecule.
500
Draw the Lewis structures for H2CO (C= central atom), name the electron and molecular geometry
trigonal planar
500
Identify the substance that would have a higher melting point and explain your choice:
CH4 or CH3OH
CH3OH - hydrogen bonding compared to dispersion forces
500
Determine if the following would be polar or nonpolar:NF3
polar (polar bonds don't cancel out net polarity in one direction)
500
What is a covalent substance that has atoms bonded to a central halogen?
Xenon Tetraflouride