7th Chemistry - Groups and Periods

St. George's College

Subject: 7th CHEMISTRY

Teacher's notes

Objectives

Class:

Vocabulary

Groups and Periods

Date: June 9th

Link and Learn

Prepared by

2009 1

7th Beethoven ‐ The Periodic Table Name

Oral Intervention

Coin

Chocolate

Ariana Gabriel Andrea Abraham Giacomo Fabiana Sinead Liliam Francesca Rodrigo Andres Stefano Jean Pierre Diego Rodrigo Luis Andrea Sebastián Ivanna Camila Carlos Aarón Paola Enrique Alessandra Irma Sophia Naomi Kiara Christopher

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7th Mozart‐ The Periodic Table Name

Oral Intervention

Coin

Chocolate

Nicole Luis Luciana Antonella Valeria Ch. Valeria C. Analucía Camila Franco Ramiro Sara Alicia José Luis Sergio Roberto Giancarlo Fiorella Gabriela Steffano Javier

Roberto R. Diego Luis Fernando Sebastián Julio Sherley César Vilma Alessandra V.

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Let's remember previous learned concepts...

Wanna Play?

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Elements in the Table • The elements in the periodic table are positioned in increasing order of their Atomic Number (Z), and NOT based on their Atomic Mass (A).

• This is known as The Periodic Law. • In order to understand the periodic table, we must remember that electrons are located in levels of energy, and in probabilistic regions called orbitals.

• The orbitals are: s : holding a maximum of 2 electrons. p : holding a maximum of 6 electrons. d : holding a maximum of 10 electrons. f : holding a maximum of 14 electrons.

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"p" block "s" block

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New knowledge beginning......

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Reading the Periodic Table Each element is identified by a chemical symbol • Each square on the periodic table includes an element’s name, chemical symbol, atomic number, and atomic mass.

• The names of the elements come from very different sources.

• Some element names vary by country, but the chemical symbols are the same worldwide.

• For most elements, the chemical symbol has one or two letters, the first letter is always capitalized, the other(s) letter(s) are lowercase.

• The newest elelments have temporary three‐letter symbols.

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Rows are called Periods • Each horizontal row of elements (from left to right) on the periodic table is called a Period.

• The physical and chemical properties of elements in a row follow a repeating, or periodic, pattern as you move across the period • Properties like conductivity and reactivity change (increase) gradually from left to right in each period.

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Columns are called Groups • Each vertical column of elements (from top to bottom) on the periodic table is called a Group.

• Elements in the same group often have similar chemical and physical properties .

• For this reason, a group is also called a family.

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INVESTIGATION • Follow the instructions of the Webquest. Present your work on Friday, June 12th.

Click Here

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7th Beethoven ‐ Groups and Periods Element to investigate

Name Ariana

88 ­ Radium

Gabriel

58 ­ Cerium

Andrea

44 ­ Ruthenium

Abraham

37

Giacomo

70

Fabiana

36

Sinead

96

Liliam

40

Francesca

60

Rodrigo

3

Andres

62

Stefano

53

Jean Pierre

100

Diego

13

Rodrigo

5

Luis

94

Andrea

46

Sebastián

103

Ivanna

9

Camila

17

Carlos

111

Aarón

107

Paola

50

Enrique

55

Alessandra

32

Irma

92

Sophia

35

Naomi

22

Kiara

41

Christopher

2

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7th Mozart‐ Groups and Periods Name

Element

Nicole

38

Luis

32

Luciana

34

Antonella

109

Valeria Ch.

27

Valeria C.

116

Analucía

66

Sylvana

95

Camila

33

Franco

60

Ramiro

82

Sara

73

Alicia

61

José Luis

92

Sergio

80

Roberto

26

Giancarlo

106

Fiorella

86

Gabriela

62

Steffano

45

Javier

40

Roberto R.

107

Diego

16

Luis Fernando

11

Sebastián

84

Julio

13

Sherley

9

César

108

Vilma

51

Alessandra V.

83

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Classes of Elements • Elements are classified as metals, nonmetals, and metalloids (poor metals), according to their properties.

• The number of electrons (e‐) in the last energy level of an atom is one characteristic that helps determine which category an element belongs in.

• The zigzag line in the table determines which elements are metals, nonmetals and metalloids.

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Resources Used Slide (Group)

Resource

Description

Origin

G1 ‐ 2

Image

Beethoven

http://bit.ly/Q7ggk

G1 ‐ 3

Image

Mozart

http://bit.ly/18LkW6

G1 ‐ 4 Image G1 ‐ 7

Images

G1 ‐ 9 Image

IS Units and Prefixes http://tinyurl.com/c9d69c Mendeleev

http://bit.ly/Pkbmw http://bit.ly/rSgUf

Groups Periods

http://bit.ly/pa98a http://bit.ly/pa98a

Newlands Octaves

http://bit.ly/11WTZv http://bit.ly/gHzPZ

G1 ‐ 9 G1 ‐ 12 Images G1 ‐ 14 Images

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Teacher's Notes This class has been designed to cover the topics of Groups and Periods from Monday June 8th till Friday June 12th.

For further knowledge about this topic: 1. Conduct a thorough search under the topic: Groups and Periods on the Web, books and magazines.

2. If findings are not specific, ask your teacher for suggestions.

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Objectives • Identify and describe the characteristics of Groups and Periods in the periodic table.

• Describe the members of the main groups and periods in the periodic table.

Note: All, or most, of the objectives will be covered during class time, however the student must be responsible for those objectives not covered or concluded.

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Vocabulary • • • • •

Element: Atomic Number: Atomic Mass: Group: Period:

Note: Most of the vocabulary words will be covered during class time, however the student must be responsible for those words not covered or concluded.

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Link and Learn You can visit the following websites to improve your understanding on the present topic: • • • • •

http://www.chem1.com/acad/webtext/atoms/atpt‐6.html#SIZE http://www.dayah.com/periodic/ http://science‐learning2009.wikispaces.com http://learningandscience.blogspot.com http://libraryatstgeorge.blogspot.com

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Prepared by

Gerardo LAZARO Science Lead Teacher Email: glazaro@sanjorge.edu.pe Wiki: http://science‐learning.wikispaces.com Blog: http://learningandscience.blogspot.com Twitter: http://twitter.com/glazaro

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