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Question 1 of 124.0 Points

`In terms of the size of the atom, which of these is the largest?

 

A.Rb

 

B.Cs

 

C.Na

 

D.K

 

E.Li

 

 

Question 2 of 124.0 Points

`Sometimes, when energy is put into an atom, the atom absorbs it. When this occurs, what happens?

 

A.the electrons speed up

 

B.the energy is stored by the atom

 

C.the energy is released in the form of light

 

D.the energy is released in the form of heat

 

E.none of the above

 

 

`

Question 3 of 124.0 Points

`Regarding water, which of these is TRUE?

 

A.two dipole moments are present and their effects are cancelled by one another

 

B.it is nonpolar

 

C.it has a tetrahedal molecular geometry

 

D.it is not symmetrically shaped as a molecule and thus is polar.

 

E.none of the above

 

 

Question 4 of 124.0 Points

`The electromagnetic spectrum is composed of many "colors" that possess different amounts of energy. Which color possesses the most?

 

A.yellow

 

B.red

 

C.violet

 

D.green

 

E.orange

 

Question 5 of 124.0 Points

`Soap is a very interesting chemical. We even discussed it on the discussion board. How does it work, exactly? Choose the best answer.

 

A.One end is polar and attaches to grease, polarizes the grease, and converts it into a soap molecule.

B.It breaks up grease into tiny molecules that are then water soluble

 

C.It has one end that's polar and another end that's not, so that one end can interact with water and the other with grease

D.It makes water a nonpolar solvent and the water can then dissolve grease.

 

E.none of the above

 

Question 6 of 124.0 Points

`Suppose you were given water to use as a solvent. You could use it to dissolve which of these compounds?

 

A.NH3

 

B.CCl4

 

C.SiO2

 

D.all of the compounds

 

E.none of the compounds

 

Question 7 of 124.0 Points

`If you were to use Lewis theory to predict the formula for the compound between potassium and sulfur, it would most likely be

 

A.KS3

 

B.K2S

 

C.KS

 

D.KS2

 

E.none of the above

 

Question 8 of 124.0 Points

I have an atom whose electron configuration can be represented by 1s22s22p63s23p3. Which of these could it be?

 

A.N

 

B.Ne

 

C.Li

 

D.P

 

E.none of the above

 

 

Question 9 of 124.0 Points

`In terms of frequency, which of these is the highest?

 

A.Infrared Radiation

 

B.Radio Waves

 

C.X-rays

 

D.Microwaves

 

E.Gamma Rays

 

Question 10 of 124.0 Points

`Geometrically tetrahedral means that the electron groups have what angle?

 

A.120°

 

B.180°

 

C.90°

 

D.109.5°

 

E.not enough information

Question 11 of 125.0 Points

Discuss the importance of the octet rule in this lesson. What is it? Why is it important relative to what we learned in this lesson? Are there any exceptions to this rule? If so, explain in detail. Be sure to base your answer on what we discussed in THIS class and use the terminology from the course materials.

 

Question 12 of 125.0 Points

(a) Discuss the difference in the shapes of s and p orbitals. (b) How many electrons does each orbital hold? (c) Which of these orbitals do electrons occupy first? (d) Which of these orbitals has the electrons with the highest energy, assuming both orbitals are in the same energy level? Be sure to base your answer on what we discussed in THIS class and use the terminology from the materials in THIS course. Your answer must be sufficiently detailed to receive credit, and properly labeled according to the letters above.

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