7th Chemistry - International System of Units

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St. George's College

Subject: 7th CHEMISTRY

Class: International

Teacher's notes

Objectives

Vocabulary

System of units Date: April 21st

Link and Learn

Prepared by

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

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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.

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Dimensions in Science • Science is based on experimentation and handling of data. • But none of this could be possible if we couldn't work and manipulate quantities, and/or measurements based on units. • Units, or dimensions, are any specified amounts of quantity, as of length, volume, force, momentum, or time, by comparison with which any other quantity of the same kind is measured or estimated. • Units are different depending on the scale, or set of units. Usually, certain countries adopt certain scales of units. • The most used scale is: MKS‐cgs or Metric System.

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http://tinyurl.com/c9yest 6


Exercise 1 Express the following numbers using exponential notation:

1. 10000 2. 0,0001 3. 10000000000 4. 0.0175 5. 9200000 6. 371 7. 7.480 8. 134.2 9. 0,000089 10. 26000000000000

Express the following numbers using the long form:

1. 7.95 x 10‐1 2. 5 x 10‐6 3. 3.08 x 10‐3 4. 1 x 10‐12 5. 14.3 x 102 6. 9.065 x 10‐4 7. 4.3 x 103 8. 6.854 x 1014 9. 37.1 x 10‐7 10. 16.9 x 100

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Exercise 2 Add the following dimensions: 1. 48.53 cm + 33 in + 1.15 m 2. 0.0653 g + 4.83 Kg + 65.1 g 3. 28°C + 77°F 4. 63.489 cm3 + 1.5 dL + 15 ml 5. 44 m + 1.5 h + 58 s

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International System of Units

IS Units ‐ Doc Practical Guide to IS Units

Guide for the Use of IS Units

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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 ‐ 5 Image

G1 ‐ 6

Image

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

http://tinyurl.com/c9yest

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 International System of Units from Monday April 20th till Friday April 24th. For further knowledge about this topic: 1. Conduct a thorough search under the topic: International System of Units on the Web, books and magazines. 2. If findings are not specific, ask your teacher for suggestions.

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Objectives • Describe the concepts of: Volume, Length, Temperature, Pressure, and International System of Units. • Perform basic calculations with the system of units.

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 • • • • • •

Unit: Length: Math: Volume: Density: Pressure:

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://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 International System of Units.doc Practical Guide to the International System of Units.pdf Guide for the Use of the International System of Units.pdf


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