Activity 2

1.     







 What is the atomic number for each of your models?

Carbon:  6
Nitrogen: 7
Hydrogen: 1

2.      What is the atomic mass number for each of your models?

Carbon:  12.0107 amu
Nitrogen: 14.00674 amu
Hydrogen: 1.00794 amu

3.      In your models, which two subatomic particles are equal in number?

Carbon--  6 protons and 6 nuetrons

4.      How would you make an isotope for one of your models?  What would change with the model?

By removing a neutron, I can affect the nucleus of the element.  I would have to obviously keep the same atomic number of a certain element, but the mass numbers would vary.

5.      Considering the overall volume of your element models, what makes up most of the volume of an atom?

Protons and neutrons are the main particles that make up the mass of an atom.

6.      For one of your models, show with another image what happens when energy excites an electron?

7.      Once the electron is excited, what do we typically observe when the electron returns to the ground-state?  

When the electron goes from its highest level (excited) to its lowest level (ground)  we see a photon of energy that emits a bright spark of light.

8.      Why are some elements different colors when they are excited?

Each element has its own unique and distinct gas.  When an element passes through their gas prism, the produce a different shade of color and light.

9.      With the Fourth of July coming up quickly, explain how the colors of fireworks arise.

When a firework is prepared, it has its own mix of elements inside it that are carefully combined to produce a certain color or light.  When the elements reach their excited stage and then go back to their ground stage they produce a certain light or color.

10.  Explain the overall organizational structure of the periodic table.

The periodic table is very well organized.  Vertically it is organized by groups and horizontally by the element’s period.  There are four sections that make up the periodic table of elements, these include:  Alkali Metals, Halogens, Alkaline Earth Metals, and Noble Gases.  There is another category of transition metals, metalloids, and non-metals as well.

11.  List two example elements for each of these groups or classes: Alkali Metals, Alkaline Earth, Halogens, Noble Gases, Transition Metals, Non-Metals, and Metalloids.

Alkali Metals: Lithium, Sodium

Alkaline Earth:  Magnesium, Radium

Halogens: Chlorine, Iodine

Noble Gases:  Neon, Helium

Transition Metals: Titanium, Cadmium

Non-Metals: Oxygen, Carbon

Metalloids:  Germanium, Arsenic