Unit 2: Measurements & Calculations

Objectives:

  1. I know the names and the purpose of common lab equipment.

  2. I know how to read an analog measuring device with the correct number of significant figures.

  3. I know that scientist always do three calculations at once:

    —> they calculate the meaning using units,

    —> they calculate the value using numbers,

    —> and they calculate the quality using significant figures.

  4. I know how to set up a dimensional analysis calculation that include:

    —> unit conversions,

    —> relationships such as density, LD50, and concentration,

    —> and percent.

  5. I know how to use density to identify substances.

Resources:

Objective 1

I know the names and the purpose of common lab equipment.

Objective 2

I know how to read an analog measuring device with the correct number of

significant figures.

Objective 4

I know how to set up a dimensional analysis calculation that include:

—> unit conversions,

—> relationships such as density, LD50, and concentration,

—> and percent.

Answers for WS Dimensional Analysis

Read Chapter 2.2, answer Questions 2.9, 2.10, 2.19, 2.20

Read Chapter 2.5 & 2.6 (optional)

For extra practice problems check out chapter 2.6 - the answers for all odd problems are given at the end of the chapter!