Periodic Trends Worksheet

Periodic Trends Worksheet – Easy Difficulty

Periodic Trends Worksheet

Name: _____________________
Date: _____________________

Introduction
Periodic trends refer to patterns in the properties of elements across different periods and groups in the periodic table. This worksheet will help you understand and identify key periodic trends such as atomic radius, ionization energy, electronegativity, and electron affinity.

Part 1: Matching
Match the term in Column A with the correct description in Column B.

Column A
1. Atomic Radius
2. Ionization Energy
3. Electronegativity
4. Electron Affinity

Column B
A. The energy required to remove an electron from an atom
B. The tendency of an atom to attract electrons in a bond
C. The size of an atom measured from the nucleus to the outermost electron shell
D. The energy change that occurs when an electron is added to an atom

Answers:
1. ________
2. ________
3. ________
4. ________

Part 2: Fill in the Blanks
Fill in the blanks with the appropriate terms: atomic radius, ionization energy, electronegativity, increasing.

1. As you move from left to right across a period, the __________ generally increases.
2. The __________ of an element typically decreases as you move down a group.
3. When moving down a group, the __________ increases due to the addition of electron shells.
4. The __________ of nonmetals is usually greater than that of metals.

Answers:
1. __________
2. __________
3. __________
4. __________

Part 3: True or False
Determine if the following statements are true or false. Write “T” for true and “F” for false.

1. The atomic radius decreases as you move from top to bottom in a group. ________
2. Ionization energy tends to decrease from left to right across a period. ________
3. Electronegativity is a measure of how well an atom can attract electrons. ________
4. Larger atoms tend to have lower ionization energies. ________

Answers:
1. ________
2. ________
3. ________
4. ________

Part 4: Short Answer
Answer the following questions in complete sentences.

1. Describe how atomic radius changes as you move across a period from left to right.
_________________________________________________________________________________
_________________________________________________________________________________

2. Explain the trend of ionization energy as you move down a group.
_________________________________________________________________________________
_________________________________________________________________________________

3. What is the relationship between electronegativity and the ability of an atom to form bonds?
_________________________________________________________________________________
_________________________________________________________________________________

Part 5: Graphing
On the grid below, draw a bar graph to represent the trends for atomic radius and ionization energy for the first three periods of the periodic table. Use a scale of your choice and label your axes.

Graph:
_________________________________________________________________________________
_________________________________________________________________________________

Conclusion
Periodic trends provide valuable insights into the behavior of elements and their interactions with each other. Understanding these trends is essential for predicting chemical reactions and bonding characteristics. Review your answers and discuss any questions you might have with your teacher or classmates.