This document provides an agenda for Day III of a Chemistry I course. It includes plans to debrief a candle lab, have students turn in completed labs and review Chapter 1. There will be a unit exam next week covering all of Unit 1. Students are assigned to complete chapter reviews, study for exams, turn in lab safety agreements and prepare element reports to present in class. Homework includes metric conversions practice and completing a lab write-up.

1. Welcome to Chemistry I – Day III
Portland Evening Scholars
Mr. Treothe Bullock - Instructor
 Debrief Candle Lab
 Turn in completed labs next week
 Chapter 1 Review
 This is your personal pre test
 We will go over
 Element Reports –notes
 Volunteers for sharing with
class
 Pair shares?
 Write up in lab next week
 Unit 2 – Overview &
PreAssessment
 Accuracy vs. Precision Lab
 SI metric conversions Practice &
Lab
 Science Math Marathon
 Exponents
 Scientific Notation
 Significant Figures
 Dimensional Analysis
 Unit 1 Exam will be next week
 All Unit 1 Work should be
completed & turned in with your
exam

2. Mass Balance Lab Discussion
 What was the largest difference between added
individual masses and the mass of both items
together?
 How many times was there a difference?
 What explanation do you have for the difference?
 What could reduce differences?
 How accurate is the scale?
 With what precision does the scale measure?

3. Homework
 Complete Chapter 2 Review
 Study for Chapter 1 & 2 Test
 Have Lab Safety agreement turned in
 give reports

4. Element Notes
 Set up section in your binder to take notes
during Element reports. Take notes on the
following.
 Name & Symbol
 Elemental Family
 When, where and by whom was it
discovered.
 Where is it most commonly found.
 How it is used.

5. Chapter 2 Review
 SI Base Units
 Density Calculations
Density = mass/volume
 Conversion factors
 Percent Error
percent error =
Value(accepted) –
Value
(experimental)/Value
(accepted) x 100
 Significant figures
 Scientific Notation
 Direct proportions
 Inverse proportions

6. Homework for Week IV
 Complete Chapter 2 Review sections 1 & 2
 Complete Metric Conversions
 Complete Accuracy and Precision Lab
Write Up
 Prepare for Unit 1 Exam

7. Scientific Inquiry
 Hypothesis /
Background
 State the proposed
phenomena or results
expected in the research
 State background
information that supports
thesis or is needed to
justify proposed
investigation.
 Connect background info
with thesis – explain why it
connects.
 Investigation Design
 Step by step procedure for
research
 Include detailed materials
list
 Include drawings of
unique procedures or
equipment.
 Address any safety
issues/risks associated
with the design

8. Scientific Inquiry
 Data Collection and
Interpretation
 Data is relevant to Design – in
quantity and quality
 Data tables and graphs clearly
labeled
 Observations are made and
noted.
 Data graphed to make
interpretation of Data quick
and easy
 Conclusion / Analysis
 Hypothesis restated
 Results stated quantitatively
and qualitatively to evaluate
hypothesis and or research
design
 Background information and
observations/data used to
explain results
 Modifications or next steps in
research proposed based on
evaluation of research.

9. Scientific Inquiry
 Sharing investigative work
 Peer Review – have your work reviewed –
edited by another student.
If your research is original the next step is:
 Public Peer Review in Scientific Journals.

10. The Law of Conservation of Mass
 Matter cannot be created or destroyed in
chemical or physical changes.
 Matter is conserved.