Phase Changes Answers

You probably already know the names of some molecules. Identify which compound (water, salt, carbon dioxide, or methane) corresponds to each of the following chemical formulas.H2O is .

CO2 is .

NaCl is .

CH4 is .

Steel:

Propane:

Calcium chloride:

Water:

Classify the type of force, attractive or repulsive, between the following pairs of particles:Electron-electron:

Proton-proton:

Chloride ion (Cl-)-sodium ion (Na+):

Chloride ion (Cl-)-sodium ion (Na+):

Which atom attracts electrons more strongly?

Which atom loses an electron more readily?

Which atom attracts electrons most strongly when bonded?

What is most likely to happen when two fluorine (F) atoms bond?

Electronegativity difference of Na and F:

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Electronegativity difference of Mg and O:

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