What is this hazard symbol?

• Biohazard Material

• Oxidizing Material

• Flammable Material

• Explosive Material

The percentage yield can be determined from the

• Difference of actual yield to the theoretical yield

• Average of theoretical yield and actual yield

• Product of theoretical yield and actual yield

• Ratio of the actual yield to the theoretical yield

This gas law states that at constant pressure and temperature, the volume of a gas is directly proportional to the number of moles of the gas present.

• Charles' Law

• Boyle's Law

• Gaylussac's Law

• Avogadro's Law

All gases have the following physical characteristics EXCEPT:

• assume the volume and shape of their containers

• most incompressible of the states of matter

• will mix evenly and completely when confined to the same container

• have much higher densities than liquids and solids

Which of the following set of quantum numbers describes electron number 14 of phosphorus?

• 3, 1, 1, - ½

• 4, 3, 2, + ½

• 2, 0, 0, - ½

• 3, 1, 0, + ½

Electron pairs stay as far apart from each other as possible to:

• minimize repulsions

• maximize repulsions

• strengthen repulsions

• no effect in repulsions

Which is true about lone pairs?

• Lone pairs occupy more volume than bond pairs.

• Lone pair-lone pair repulsions are lesser than lone pair-bond pair repulsions.

• Lone pairs stay as far apart from each other as to strengthen repulsions.

• Lone pairs tend to break up and react than those who were unpaired.

Which of the following is the simplest member of organic compounds?

• Formic acid

• Formaldehyde

• Methane

• Ethanol

The theory that states that because electron pairs repel, molecules adjust their shapes so that the valence-electron pairs are as far apart as possible.

• Ball and stick Theory

• VSEPR Theory

• Molecular Geometry Theory

• ASKH Theory

Ozone, O3, an allotrope of oxygen is also a gas at room temperature. True or False?

• True

• False

• Partially True

• Partially False