St. George's College
Subject: 7th CHEMISTRY
Class: Atomic Calculations
Teacher's notes
Objectives
Vocabulary Link and Learn
Prepared by
Date: April 15th
2009 1
7th Beethoven ‐ Atomic Calculations 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
2
7th Mozart‐ Atomic Calculations 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.
3
Exercise 1 Identify the following Elements, by name or chemical symbol.
Element's Name
Chemical Symbol
Element's Name
Au
Scandium
Lawrencium
Chemical Symbol
Nb Na
Tin
Polonium
As Kr
Plutonium
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Element's Name
Chemical Symbol
Atomic Number
Os
Atomic Mass
# Electrons
190 65
Curium
30
247 Hg 43
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Exercise 2 Calculate the molecular mass in the following compounds: Molecular Oxygen Water Carbon Monoxide Carbon Dioxide Sodium Chloride Hydrogen Peroxide Glucose
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Exercise 3 1. What is the percentage by mass of oxygen (O) in sodium hydroxide (NaOH)?
2. What is the percentage by mass of chlorine (Cl) in perchloric acid (HClO4)?
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Exercise 4 Photosynthesis is the process used by autotrophic organisms to produce their own food. Obejtives: 1. Determine the general formula of the process. 2. Calculate the percentage in molecular mass of Carbon in the reactants, and then in the products section of the general formula.
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Let's check an example on how to fill the electron shells.
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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 G1 ‐ 6 G1 ‐ 8 G1 ‐ 10 G1 ‐ 11 G1 ‐ 12
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Teacher's Notes This class has been designed to cover the topics of Atomic Calculations from Monday April 13th till Friday April 17th. For further knowledge about this topic: 1. Conduct a thorough search under the topic: Atomic Calculations on the Web, books and magazines. 2. If findings are not specific, ask your teacher for suggestions.
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Objectives • Identify and determine the atomic properties of elements: atomic mass and atomic number. • Perform basic calculations with atomic mass and atomic number.
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 • • • • • • •
Matter: Atom: Nucleus: Electronic Cloud: Proton: Neutron: Electron:
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://bit.ly/PvvMp http://bit.ly/KCmja www.sanjorge.edu.pe 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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Attachments
7th Chemistry Reading 1 Branches of Chemistry Supergoo to the Rescue.docx 7th Chemistry Reading 1 Branches of Chemistry Graphene's Superstrength.docx 7th Chemistry Reading 1 Branches of Chemistry Meteorites may have sparked life on earth.docx 7th Chemistry Reading 1 Branches of Chemistry Plastic munching microbes.docx