Laboratory Measurements

CHM 101-03L

Exp 1

Laboratory Measurements

Your Name

Lab : 8/29/2007

Due : 9/5/2007

Turned-in : ______

Discussion

Instrumental Uncertainties

{List the instruments that you used in the experiment which have measurement error. Here are 2 examples.}

1. Metric ruler +/- 0.01 cm

2. Top Loading Balance +/- 0.001 g for loads under 40 g

+/- 0.01 g for loads over 40 g

and so on...

Indeterminate Errors

{You need at least 3 indeterminate errors. You can give more. Each item should be one to two sentences. One sentence is usually enough. They MUST be complete sentences.}

1.

2.

3.

DO NOT INCLUDE THIS PAGE WITH YOUR LAB REPORT.

GUIDELINES FOR LAB REPORTS

CHEM 101

q Lab reports are due one week after the experiment is performed unless otherwise instructed.

q Lab reports are worth 15 points each, which includes 2 points for the Pre-lab questions.

q One point will be deducted for each college day a lab report is late.

q Lab reports must be word processed or typed.

Lab Report Rubric

_____ Format:

0-1 Sections in order

Sections labeled

Used word processor

Used front pages only

Stapled

_____ Title Page:

0-1 Course and section #s

Experiment number and title

Name and dates

_____ Data:

0-2 Blue/black ink

Neat corrections

Significant figures

Complete

Data page initialed

_____ Calculations:

0-2 No math errors

Units included

Correct significant figures used

_____ Discussion:

0-3 Instrumental uncertainties (Use the handout)

Indeterminate errors (At least 5 are required - one to two sentences each.)

Results within margin of error (Are your results close to what is expected?)

Content organized & reflective (Did you take enough time to do a good job?)

Good mechanics (You should spell correctly and use proper grammar.)

_____ Pre-lab:

0-2

_____ Post-lab:

0-2

_____ Lab Work:

0-2 Worked safely

Cleaned up lab area