Notes

Lab Station #1—Atomic Theory Webquest

During this webquest, you will explore atomic theories described by several scientists. For each atomic theory, you will draw a visual representation of each atomic model on a graphic organizer.

Democritus’ Model: https://the-history-of-the-atom.wikispaces.com/Democritus
In your own words, describe the five parts of Democritus’ atomic theory.
All matter is made up of invisible particles, named atoms
Atoms cannot be destroyed
Atoms are solid, but they’re also invisible
Atoms are alike
Atoms can differ in mass, shape, size, position, and pattern
Draw a picture of Democritus’ model on the graphic organizer. (Refer to chapter four in your book if you need extra help.)


Dalton’s Model: http://www.iun.edu/~cpanhd/C101webnotes/composition/dalton.html
In your own words, describe the four parts of Dalton’s atomic theory.
All matter is made up of indivisible, indestructible particles called atoms
A elements atoms are identical in mass and properties
Two or more different kinds of atoms combined make a compound
The rearrangement of atoms is a chemical reaction
Compare and contrast Dalton’s atomic theory with Democritus’ atomic theory using the table below. I expect you to find two differences for each model and four similarities between the two models.
Democritus’ Model

Similarities

Dalton’s Model

Atoms are invisible
Matter cannot be destroyed

Atoms are indestructible
Atoms are identical in mass and properties
Atoms can be rearranged
All matter is made up of atoms

Two or more different kinds of atoms combined make a compound
The rearrangement of atoms is a chemical reaction

Draw a picture of Dalton’s model on the graphic organizer. (Refer to chapter four in your book if you need extra help.)


Thomson’s Model: https://app.discoveryeducation.com/player/view/assetGuid/2eb4cbc4-8e87-4aff-845d-ae65b254e739
In your own words, describe Thomson’s atomic theory.
Why was the discovery of the electron a major breakthrough in science?
Imagine one of your friends doesn’t know what plum pudding is. What other snack could you use to describe Thomson’s model? Why did you choose that snack?
Draw a picture of Thomson’s model on the graphic organizer. (Refer to chapter four in your book if you need extra help.)
Rutherford’s Model: https://app.discoveryeducation.com/player/view/assetGuid/f09a3ba7-fb2a-46a9-8a37-a7ef0e2adcb1
In your own words, describe Rutherford’s experiment.
What conclusions did Rutherford receive from his experiment?
Draw a picture of Rutherford’s model on the graphic organizer. (Refer to chapter four in your book if you need extra help.)
Bohr’s Model: https://app.discoveryeducation.com/player/view/assetGuid/cebc7443-9859-4308-90ab-956a98e4e302
Why were an onion and a ladder used to represent the Bohr model?
Name two items that can also be used to represent the Bohr model. Why did you choose those items?
Draw a picture of Bohr’s model on the graphic organizer. (Refer to chapter four in your book if you need extra help.)
Electron Cloud Model: https://app.discoveryeducation.com/player/view/assetGuid/dd2aea86-8ff6-4b81-ac91-1e8354afb40a
Compare and contrast the electron cloud model and the Bohr model using the table below. I expect you to find one similarity between both models and one difference for each model.
Bohr’s Model

Similarity

Electron Cloud Model


Draw a picture of the electron cloud model on the graphic organizer. (Refer to chapter four in your book if you need extra help.)

Lab Station #2—Matching and Modeling the Elements

At this station, you will be matching subatomic particle cards to elements. Then, you will create at least three elements using the materials provided.

Correctly match each card (atomic mass, atomic number, number of protons, number of neutrons, and number of electrons) to the element card.
When you have matched all cards to the correct element, and have been given the ok, choose three elements to create using the materials given. Think about what you’ll need to construct each element.
Construct a model to represent the element. Be sure to label all parts of your model.
Insert an image of each model you construct. Then, answer the questions below.
INSERT IMAGES HERE!




Which material did you choose to represent the protons? Why?
Colored tiles
Which material did you choose to represent the neutrons? Why?
Colored tiles
Which material did you choose to represent the electrons? Why?
Colored tiles
Lab Station #3—PHET Simulation

In this simulation, you will visit an interactive website where you can “Build an Atom.” While building different atoms, be sure to note any patterns you see.

Go to the following website. Once there, click the “download” button. https://phet.colorado.edu/en/simulation/build-an-atom
Select “Build an Atom.”
Create five atoms of your choice (at least two need to be isotopes!) and record them in the chart below.
To create an atom, drag the protons, neutrons, and electrons to the circle. When you are ready to create a new atom, click on the orange button at the bottom of the screen.




Atom Name

Number of Protons

Number of Neutrons

Number of Electrons


Mass Number

Atomic Number

Isotope of Hydrogen

1

2

2

3

1

Isotope of Lithium

3

2

3

5

3

Helium

2

2

4

4

2

Beryllium

4

4

4

8

4

Boron

5

5

4

10

5


When building the atoms, what patterns did you notice? (Think about the numbers of protons, neutrons, and electrons)
Lab Station #4—Atoms and Elements Interactive Website

In this station, you will explore an interactive website that will help you become familiar atoms and elements.

Click on the link and follow the on-screen instructions. Be sure to answer the questions below. http://www.bbc.co.uk/bitesize/ks3/science/chemical_material_behaviour/atoms_elements/revision/1/


Name five things that are made up of atoms.

What is an element?
Contrast metal elements with non-mental elements using the chart below. I expect at least five items to be listed for each side.
Metal Elements

Non-Metal Elements


What is special about carbon?
What three elements are attracted to magnets?
Complete the quiz at the end. What was your score?
Lab Station #5—Brainpop Video and Activities

In this segment, you will learn about the parts of an atom—the subatomic particles.

Use the link to access the Brainpop video: https://www.brainpop.com/science/matterandchemistry/atoms/

After watching the video, complete the activities below.

Take the graded quiz. What was your score? 8/10
Complete the graded challenge. What was your score? 18/18
Match each term to its correct definition by writing the corresponding letter of the definition next to the term.
Terms

Definition

Atoms
Element
Proton
Neutron
Electron
Nucleus
Strong Force
Has no charge
Holds the nucleus together
Has a positive charge
Two or more atoms of the same kind
Has a negative charge
The center of an atom
Smallest chemical substance

Why do you think it is important to learn about protons, neutrons, and electrons?