1. UNIT 1 Syllabus Expectations and Lab Safety
Scientific Measurement, Accuracy, Precision
Scientific Notation and Sig Figs
Calculations and Conversions

2. Bell Work- Lab Safety
DO THIS WORK IN THE BACK HALF OF YOUR LABORATORY NOTEBOOK – MARK THE PAGE
1. Which of the following are safety equipment found in the laboratory:
Fire extinguisher
Graduated Cylinder
Erlenmeyer Flask
Safety goggles
Eye Wash Station
3. Where can you find important safety information?
NFPA diamond
MSDS Sheets
The red folder in the back of the room
Reagent Labels
The FDA website
4. What is the cell phone policy in our Chemistry lab?
__________________________________________________________________________

3. Introduction to Accuracy & Precision

4. Lab Safety and Measurement
Here’s the BIG Picture
Topic
Reading
The Good Stuff
Homework
Laboratory Safety
IN CLASS Review of Study Guide
ACS Secondary Science lab safety
Study for Lab Safety Quiz in 1 day
Scientific Measurement
Accuracy, Precision
CH3.1 pp62-72
3.1 Practice problems 1, 3, 3.1 sect assess odds
Practice/Reinforcement
In Class Handouts-Begin handouts in class & Complete for homework

5. Unit 1b: Measurements in Science
Measurement is one of the most basic foundations of good laboratory technique.
Today, we will be practicing measuring objects and solutions using those techniques in the measurement lab.
But first…. What is good technique?
Accuracy
Precision

6. What is the difference between accuracy and precision?
Can something be both precise and accurate?
Can something be neither accurate nor precise?

7. Accuracy & Precision
The degree to which the result of a measurement or calculation conforms to the correct value or a standard.
How close you are to the actual answer.
A measurement or calculation as represented by the consistency of results.
How close together your results are to one another regardless of the actual answer.

8. Taking Measurements
When taking measurements, you always measure one digit past what you can see.
This is called the “limit of precision.”

9. Examples:
How would you read the two graduated cylinders to the right?

10. REMEMBER UNITS!!! All numbers must be followed by a unit Liters = L
Milliliters = mL
Grams = g
Naked numbers have no meaning in science! Thus will receive no credit!

11. Accuracy Precision and Error

12. Accuracy Precision and Error

13. bSocrative You will now take the quizlet entitled ACCURACY & PRECISION

14. Measurement Lab
Purpose: Practice taking measurements and appropriately calculating results.
Nuts and Bolts:
Work with your lab partners in your group
YES YOU MUST WEAR YOUR SAFETY GOGGLES
Done? Answer the summary questions on the last page and prepare for your safety quiz!

15. Homework/Reminders/Etc.
BRING A CALCULATOR TO CLASS
Homework:
Topic
Reading
Homework
Laboratory Safety
Due today
Scientific Measurement
CH3.1 pp62-72
3.1 Practice problems 1, 3, 3.1 Sectiont Assessment, odds
Hold for text
Accuracy & Precision
CH 3.2 pp73-79
3.2 Section Assessment, evens
Practice/Reinforcement
HANDOUT SIG FIGS

16. Learning Styles

17. Learning Styles 5-6

18. Learning Styles