Changes in Matter 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 .

CH4 is .

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

CH4 is .

Steel:

Water:

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

Which atom attracts electrons more strongly?

Which atom attracts electrons most strongly when bonded?

Electronegativity difference of Na and F:

Electronegativity difference of C and H:

Electronegativity difference of C and C:

Electronegativity difference of N and H:

Which of the following explains why metals are able to be pounded, extruded, bent, and shaped without breaking?

A =

A =

Calcium chloride:

Electron-proton:

Which atom loses an electron more readily?