Periodic Trends Graphing Lab Activity Answer Key Details

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In the list, there is some information about the graphing periodic trend. This article will provide information about the form's length, completion duration, and the fields you will be expected to fill.

QuestionAnswer
Form NameGraphing Periodic Trend
Form Length2 pages
Fillable?No
Fillable fields0
Avg. time to fill out30 sec
Other nameschemistry graphing periodic trends answer key, periodic trends graphing lab activity answer key, graphing trends in the periodic table answer key, graphing periodic trends worksheet answers

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GRAPHING PERIODIC TRENDS

STANDARD: Students know how to use the periodic table to identify trends in ionization energy, electronegativity, and the relative sizes of ions and atoms.

PRE-LAB DISCUSSION:

The Periodic Table is arranged according to the Periodic Law. The Periodic Law states that when elements are arranged in order of increasing atomic number, their physical and chemical properties show a periodic pattern. Students can discover these patterns by examining the changes in properties of elements on the Periodic Table. The properties that will be examined in this lesson are: atomic radius AND first ionization energy

PURPOSE:

To understand periodic trends relating to atomic radius, ionization energy, and electronegativity.

PROCEDURE:

Use the information in these tables to complete the graph as described below.

RESULTS:

Symbol

Atomic Radius

First Ionization

Electronegativity

 

(Picometers)

(kilojoules/mole)

(4-point scale)

H

31

1312

2.1

Li

128

520

1.0

Na

166

496

0.9

K

203

410

0.8

Rb

220

403

0.8

Cs

244

376

0.7

Symbol

Atomic Radius

First Ionization

Electronegativity

 

(Picometers)

( kilojoules/mole )

(4-point scale)

Na

166

496

0.9

Mg

141

738

1.2

Al

121

578

1.5

Si

111

787

1.8

P

107

1012

2.1

S

105

1000

2.5

Cl

102

1251

3.0

Ar

106

1521

---

1.Define each of these terms: Atomic radius, First Ionization Energy, and Electronegativity

2.Using colored pencil or pen, list under the symbol (in this order!) the Atomic Radius, First Ionization Energy, and Electronegativity. Use a different color for each property. Example: Write all of the Atomic radius values in red, all of the First ionization energies in green, and all of the Electronegativities in blue. Of course, you can pick any colors that are available, as long as you are consistent.

3.Observe the trends in each property as you go down the Alkali metal group, and as you go across Period 3.

4.Write out each of the statements written on the opposite side, completing each statement with the observed trend (increase or decrease)

5.There is NO ABSTRACT to write for this activity

Name ____________________________________________ Period_____

PERIODIC TRENDS

Definitions:

Atomic Radius –

First Ionization Energy –

Electronegativity -

H

Across a period (ĺ) atomic radius tends to ________________.

 

 

 

 

Across a period (ĺ) first ionization energy tends to ________________.

Li

Across a period (ĺ) electronegativity tends to ________________.

 

 

 

 

 

 

 

 

 

 

 

 

Na

Mg

Al

Si

P

S

Cl

 

Ar

166

 

 

 

 

 

 

 

 

496

 

 

 

 

 

 

 

 

0.9

 

 

 

 

 

 

 

 

K

 

 

 

 

 

 

 

 

 

Down a Group (↓) atomic radius tends to ________________.

 

 

Down a Group (↓) first ionization energy tends to ________________.

Rb

 

Down a Group (↓) electronegativity tends to ________________.

 

 

 

 

 

 

 

 

 

 

Cs

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

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