12/20 MS Chemistry Recording - Atomic Structure

https://youtu.be/pD9oELkimDo

12/20

Hi folks,

Well today was the last class of the decade!  Pretty amazing really.

We did a bit more work with atomic structure.  We really got into how to figure out the number of protons, neutrons and electrons in an atom.  We also spent a bit of time learning how to find the number of neutrons and electrons in isotopes and ions.

As my Christmas gift to you all, NO HOMEWORK!!!  

Merry Christmas, Happy Holidays and Happy New Year!  I hope your break is full of warmth, happiness and safe travels.

Best,

Jim Mueller

(919) 907-3217

12/13 MS Chemistry update and homework due 12/20

Hi folks,

This week we explored the atom a bit deeper and we also just touched on our tour of the periodic table.  I gave everyone an early Christmas present when I gave everyone their very own periodic table to cherish forever.

Homework for this week is to answer the following questions.  I've provided the answers in the .pdf.  Please check your answers when you are done.  The homework is really intended to be a pre-quiz quiz so be sure you get them all right.

1.  What is the definition of an ion?

2.  What is the definition of an isotope?

3.  What three particles are inside an atom?

4.  What is the definition of an atom.

5.  What is the charge on each one of the three particles in the atom?

6.  Which is greater, the amount of atoms that you can line up across the tip of a human hair or the amount of people in that you can fit in a movie theater?

7.  How many protons does an atom of carbon have?

8.  How many protons does an atom of Sodium have?

9.  How many protons does an atom of  Rutherfordium have?

10.  What is the atomic mass of oxygen?

11. What is the atomic mass of tin?

12.  What is the atomic mass of mercury?

13.  If a proton has a mass of 1 and a neutron has a mass of 1, how come the atomic masses are so strange?

14.  Remember that atomic mass is the number of protons and neutrons in an atom.  So, to find the number of neutrons in an atom you need to subtract the number of protons from the atomic mass.  For example, if I want to find the number of neutrons in a helium atom I would subtract 2 protons from 4 atomic mass to get 2 neutrons.  Now you try it.  Find the number of neutrons in the following atoms.  Be sure to round your numbers to the nearest whole number.

a.  Boron

b.  Calcium

c.  Beryllium 

d.  Fluorine

e.  Thallium (The most poisonous element on the table!!)

12/13 MS Chemistry Recording - Deeper into Atoms

https://youtu.be/fRwCAtg34mQ

12/6 MS Chemistry Recording - Introduction to Atoms

Part 1

Part 2

12/6 MS Chemistry update and homework due 12/13

Hi folks,

Over the year so far, we've been working on some of the major skills that are needed in order to collect careful data, get good measurements, and do good science.

From here one out we are going to get deeper into atoms, the periodic table and chemistry.  Today we learned a bit  about how CRAZY small the atom is and about how empty the atom is.  99.99999% of the atom is empty space.  That means most of us are nothing but empty space!  Here is the video we watched today about just how incredibly small and empty the atom is.  It's rather mind-blowing.

For homework this week take a look at the atoms chapter that starts on page 171 in the enclosed .pdf.

Do questions 1 - 9 on page 178,

Best,

Jim Mueller

(919) 907-3217