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: 

  1. CH3OH

  2. CO

  3. CF4

  4. 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