Lecture_5_SI_Units (1) - LECTURE NOTES LECTURE 5 SI UNITS...

Info iconThis preview shows pages 1–3. Sign up to view the full content.

View Full Document Right Arrow Icon
L E C T U R E N O T E S LECTURE 5 SI UNITS (5.2, 5.3, 5.8) GENERAL CHEMISTRY Fall 2009 Updated: 11/22/2011
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
5.2 Units Measurements involve the number and the units. The units’ part provides the scale for  comparison  to other numbers. A.   SI Base Units  In 1960 a committee created a common set of units based on the metric system known  as the (SI systems of measurement: Le Systeme International d'Unites) 1.  Mass  - kilogram, kg a. Mass is a measure of the amount of matter contained in an object (versus  weight?) (1) Mass does not change with a change in position b. Weight is a measure of the force of attraction between an object and the earth (1) Weight may change with a change in position 2.  Length  - meter, m  3.  Time  - second, s 4.  Temperature  - kelvin, K 5.  Amount of substance  - mole, mol  B. Prefixes  1. Decimal system with each component a multiple or subdivision of 10
Background image of page 2
Image of page 3
This is the end of the preview. Sign up to access the rest of the document.

Page1 / 4

Lecture_5_SI_Units (1) - LECTURE NOTES LECTURE 5 SI UNITS...

This preview shows document pages 1 - 3. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online