Welcome to Chemistry I – Day IIIPortland 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

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?

Homework Complete Chapter 2 Review

Study for Chapter 1 & 2 Test

Have Lab Safety agreement turned in

give reports

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.

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

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

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

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.

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.

The Law of Conservation of Mass

Matter cannot be created or destroyed in chemical or physical changes.

Matter is conserved.