# Lecture 3, Chapter 2, Section 3-4

## Announcements

- Roll Call
- Questions

## Measurement

- SI conversion of meter to kilometer etc

- Volume
- Cubic meter
- Cubic decimeter
- Cubic centimeter
- Liter
- Milliliter

- Mass

## Uncertainty in Measurement

- Measured Values

- Absolute Numbers

- Definitions

- Uncertainty of length with
- Cheap ruler
- Expensive ruler
- Interferometer

- Definition of a meter

## Homework

- Questions
- Work Problems at board

## Challenge Problem

A box is 2.54 cm high, 1 meter long, and 5.1 micrometers thick. What is the volume in cm^{3}, mL
and liters?

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Department of Chemistry

Widener University

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Last Updated 10/26/02