Docsity
Docsity
Prepare for your exams
Prepare for your exams

Study with the several resources on Docsity

Earn points to download
Earn points to download

Earn points by helping other students or get them with a premium plan

Guidelines and tips
Guidelines and tips
Sell on Docsity
Sell on Docsity
Docsity AI
Docsity AI
Log inSign up

Prepare for your exams

Study with the several resources on Docsity

Find documents

Prepare for your exams with the study notes shared by other students like you on Docsity

Search for your university

Find the specific documents for your university's exams

Docsity AINEW

Summarize your documents, ask them questions, convert them into quizzes and concept maps

Explore questions

Clear up your doubts by reading the answers to questions asked by your fellow students

Earn points to download

Earn points by helping other students or get them with a premium plan

Share documents
download point icon20 Points

For each uploaded document

Answer questions
download point icon5 Points

For each given answer (max 1 per day)

All the ways to get free points
Get points immediately

Choose a premium plan with all the points you need

Study Opportunities

Choose your next study program

Get in touch with the best universities in the world. Search through thousands of universities and official partners

Community

Ask the community

Ask the community for help and clear up your study doubts

Free resources

Our save-the-student-ebooks!

Download our free guides on studying techniques, anxiety management strategies, and thesis advice from Docsity tutors

Investigating Atomic Radius and Ionization Energy, Summaries of Law

Law

A detailed activity for students to explore the concepts of atomic radius, ionization energy, and ionic radius. It includes interactive exercises using the periodic trends simulation, where students are asked to compare elements within the same group and period, ionize atoms, and analyze graphs to observe trends. The activity encourages students to think critically about the factors contributing to atomic radius and ionization energy trends, and to make predictions based on their observations.

Typology: Summaries

2023/2024

Uploaded on 02/20/2024

john-jackson-4
john-jackson-4 🇺🇸

1 document

1 / 9

Toggle sidebar

This page cannot be seen from the preview

Don't miss anything!

bg1
1
Name: ______________________
Simulation: Periodic Trends
Background
In this investigation you will examine several periodic trends, including atomic radius,
ionization energy and ionic radius. You will be asked to interact with select atoms as you
investigate these concepts.
1. Draw a picture to support a written definition of the word “radius.”
2. Assuming atoms are shaped like spheres, what subatomic particles would be found
in the center? What subatomic particles would be found around the perimeter?
3. Keeping in mind your answers to questions 1 & 2, in your own words describe the
meaning of “atomic radius”
4. What is an ion? What is a valence electron? How is an ion formed?
5. What do you think ionization energy means? Think about this in relation to your
answer to question #4.
6. Keeping in mind all of your answers thus far, attempt to define the term ionic
radius.
*Check your answers before moving on to the next portion of the activity.
Procedure
American Association of Chemistry Teachers |1-246
pf3
pf4
pf5
pf8
pf9

Partial preview of the text

Download Investigating Atomic Radius and Ionization Energy and more Summaries Law in PDF only on Docsity!

1 Name: ______________________ Simulation: Periodic Trends Background In this investigation you will examine several periodic trends, including atomic radius, ionization energy and ionic radius. You will be asked to interact with select atoms as you investigate these concepts.

  1. Draw a picture to support a written definition of the word “radius.”
  2. Assuming atoms are shaped like spheres, what subatomic particles would be found in the center? What subatomic particles would be found around the perimeter?
  3. Keeping in mind your answers to questions 1 & 2, in your own words describe the meaning of “atomic radius”
  4. What is an ion? What is a valence electron? How is an ion formed?
  5. What do you think ionization energy means? Think about this in relation to your answer to question #4.
  6. Keeping in mind all of your answers thus far, attempt to define the term ionic radius. *Check your answers before moving on to the next portion of the activity. Procedure

2 Using your computer, tablet or mobile device, navigate to the website: http://www.teachchemistry.org/periodic-trends. You should see the picture below on your screen. Atomic Radius

  1. Choose any element shown in green from group 1 on periodic table clicking the on the element symbol. You should see details about the element that you chose appear at the bottom of the screen. An example is shown below. a. Select another element from group 1 clicking on its symbol. Write the symbols and atomic number for each of the elements that you chose below: b. Which element appears larger in the side-by-side comparison?

4 Reset the selected data using the reset symbol. e. Choose an element from a different period by clicking on its symbol. Again choose a second element to compare from the same period. Write the symbols and atomic number for each of the elements that you chose below: f. Which element appears larger in the side-by-side comparison? g. What is the value in picometers (pm) for the radius of each atom? Do these values support your answer for part e? h. Based on your answers in question 2 parts a-g, what is the general trend in the atomic radius of atoms within the same period? i. Think about the possible contributing factors to the atomic radius trend within a period, specifically considering the protons in the nucleus, the electrons and the electron shells. List them below: Reset the selected data using the reset symbol.

  1. Based on what you have learned, and without the assistance of the periodic trends simulation, predict which element is larger in the following pairs of atoms: a. Be or Sr b. P or Ar c. Rb or S d. F or He e. Br or Ca f. Xe or Ba Using the simulation, check your predicted answers to see if you are correct! Ionization energy
  2. Choose an element from the Alkali Metal family (group 1) by clicking on the element symbol. You should see details about the element that you chose appear at the bottom of the screen. An example is shown below.

5 a. Using your cursor attempt to ionize the atom that you chose by pulling a valence electron from the electron shell. Describe what happened. (Were you successful? Was it “easy” to remove the electron? Did the atom seem to have a strong hold on the electron?) b. What was the ionization energy value for the atom that you chose? c. Did any other information about the atom change after your attempt to ionize the atom? d. Now choose the Noble Gas element that is in the same period as the Alkali metal chosen in part a. Attempt to ionize this atom by pulling a valence electron from the electron shell. Describe what happened. (Were you successful? Was it “easy” to remove the electron? Did the atom seem to have a strong hold on the electron?)

7 Navigate back to the main page, and reset the data using the reset symbol. i. Now choose two elements that are in the same group. How do their ionization energy values compare? Does this data support your prediction from part h?

  1. Based on what you have learned, and without the assistance of the periodic trends simulation, organize the following lists of atoms from lowest ionization energy to highest ionization energy: a. S, Na, Al, Ar b. I, F, Br, Cl c. Rb, O, Si, Mg, He Using the simulation, check your predicted answers to see if you are correct!
  2. Reflecting on what you have learned about both atomic radius and ionization energy at this point, which of the following statements best describe these trends?  Atoms that have large atomic radii also have large values of ionization energy.  Atoms that have small atomic radii will have large values of ionization energy. Explain your choice referencing both the atomic model and subatomic particles: Reset the selected data using the reset symbol. Ionic Radius
  3. Choose an element from the Alkali Metal family (group 1) by clicking on the element symbol. You should see details about the element that you chose appear at the bottom of the screen. An example is shown below.

8 a. What is the atomic radius value for this element? b. Using your cursor ionize the atom that you chose by pulling a valence electron from the electron shell until it is fully removed. What happened to the electron shell where this valence electron was located? How is the change in subatomic particles related to the size of the ion? c. Since this atom is now ionized , you should see a value for the ionic radius. What is the value? Is this value larger or smaller than the value for the atomic radius in part a? Reset the selected data using the reset symbol.

  1. Next, choose an element from the Alkaline Earth Metal family (group 2) by clicking on the element symbol. You should see details about the element that you chose appear at the bottom of the screen. a. What is the atomic radius value for this element?