Last modified: Tue 10/01/2013 09:50:12 pm

Oklahoma State University

It is OK to use your textbook, but if you can answers the questions without it that is OK too. Lets see how well you've got sig figs and sig figs in calculations. Although we have not discussed conversions, lets try a few of those also.

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Answer all of the questions below. If you do not know an answer enter CNA. However, it will help me the most if you answer each question with your best intuition/idea about what would be a reasonable answer.


The BCE must be completed before class starts, for this BCE class has already met. It will not count towards your BCE total. NOTE: If class has not started and you receive this message, go ahead and do the BCE, I'll still count it.

First Name:

Last Name:

School:

1. In the following table listing the three important subatomic particles complete the missing information.

Subatomic Particle

Symbol

Charge
(magnitude and units)

Mass
(magnitude and units)

Proton

p+

magnitude = (units)

magnitude = (units)

Neutron

no

magnitude = (units)

magnitude = (units)

Electron

e-

magnitude = (units)

magnitude = (units)

 

2. Briefly describe the location of each subatomic particle.

3. Describe the motion of the electron in an atom.

4. The following notation is frequently used to represent an atom (See your textbook for a discussion of this notation.)

ZAXcharge

A is the mass number (number of protons plus neutrons)
Z is the atomic number (number of protons)
X is the symbol for the element
charge is the charge (number of protons (+1) plus electrons (-1))

Based on this definition indicate the number of each of the subatomic particles in the following atoms/ions.

atomic notation

protons

neutrons

electrons

charge

612C

1735Cl-1

1939K+1

5. Is there anything about the questions that you feel you do not understand? List your concerns/questions.

6. If there is one question you would like to have answered in lecture, what would that question be?