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The structural formula for CO2  is O = C = O Each line in the formula presented above represents:

You have two beakers. One contains pure water, the other contains pure liquid chloroform. The covalent bonds of chloroform are nonpolar, so there are no hydrogen bonds among the chloroform molecules. You pour crystals of table salt (NaCl) into each beaker. Predict what will happen:

Hydrogen bonds and van der Waals forces are weak bonds but they are important because:

An atom that has gained or lost one or more electrons is:

Which portion of a water molecule has a partial negative charge?

Which of the following illustrations is not a structural isomer of an organic compound with the molecular formula C6H14? For clarity, only the carbon skeletons are shown; hydrogen atoms that would be attached to the carbons have been omitted.  A.     B.   C.     D.    

Molybdenum has an atomic number of 42. Several common isotopes exist with atomic masses from 92-100. Therefore, which of the following can be true?

What type of chemical bond is broken when liquid water changes to a gas?

When atoms involved in a covalent bond have the same electronegativity, what type of bond results?

BONUS: 6 CO2 + 6 H2O + Light → C6H12O6 + O2 is an example of a chemical reaction. What is occurring during this reaction? Bonus points will be added manually after the exam window has closed.