Warm Up
8-13-15
Direction: Copy the questions and answer
1.Based
on the syllabus how many percent is
classwork and homework worth?
2.What format do you use to take notes in class?
3.Can you turn in late work?
4.If you’re tardy, how many minutes do you have to
stay after the bell?
Agenda
Homework
Syllabus walkthrough
Emergency contact info
Lab safety walkthrough
Online homework walkthrough
Notes Scientific Method
Aug 17 – Glassware Poster due
Aug 17 – Signed syllabus due
Aug 19 – Safety Quiz
Class Syllabus
Please follow along:
 Advices
 Grading scale
 Quizzes and Tests
 Classwork
 Homework – Online Course #D205
 Late assignment policy
-Extra credit
 Academic dishonesty
- Pet peeve
 Rules & Consequences
 Class website
LABORATORY
SAFETY
RULES
THIS IS CHEMISTRY!
•
Chemical Hazard Label
•
SDS
•
Safety Quiz
Safety rap Video
http://www.youtube.com/watch?v=xJG0ir9nDtc
NFPA CHEMICAL HAZARD LABEL
FLAMMABILITY
HEALTH
REACTIVITY
(STABILITY)
SPECIAL
NFPA CHEMICAL HAZARD LABEL
0
Least
Serious
4
Most
Serious
4
Flammable vapor which
burns readily
0
Substance is stable
NFPA CHEMICAL HAZARD LABEL
Diborane
Burns readily.
May
detonate
with heat or
ignition.
Severe
health
risk.
Avoid water.
NFPA CHEMICAL HAZARD LABEL
Complete Label for Phosphine
Write down
What each
symbol
stands for
SDS = Safety Data Sheet
C. Johannesson
Notebook Format
Date
Warm up questions and answers
1.
2.
3.
Main Topics:
- Main ideas
- Questions
related to
the notes
- Notes from lecture
- Explanations
- Diagrams
- Pictures
1 summary per day. 3 sentences
summarizing main ideas from today’s
notes and explain what they are
 You may write
on the back
 Start with a
new page each
day
Unit 1
Steps of the Scientific Method
Identify the problem
 Form a hypothesis
 Test hypothesis by performing
experiments
 Analyze data
 Draw conclusions

The Experiment



Independent variable: the item being tested
in the experiment (What YOU
change/manipulate)
Dependent variable: the item being
measured in an experiment (DEPENDS on
the independent variable)
Control group: The part of the experiment
that is left unchanged (not required in some
experiments)
After the experiment….



Law: generalizes a body of observations.
Explain things, but they do not describe
them. Always true.
Law of Gravity
Theory: summarizes a group of
hypotheses. It is valid as long as there is no
evidence to dispute it (theories can be
disproven)
Kinesio Tape
Homework Assignment



Make a poster of lab glassware due on
Monday, Aug 17th
Google lab glassware, select 6 objects, hand
drawn, colored and label on print paper
Some example laboratory objects:
-Test tube rack
-Test tube holder
-Test tubes
-Pipette
-Graduated cylinder
-Erlenmeyer flask
-Beakers
-Bunsen burner
-Hot plate
-Well plate
-Thermometer
-Ring stand
Online HW




Everyone must sign up for an account
Record your login name and password for
the Utexas website then turn it in
Sign in and request to be in my class
Course # D205
1st Extra credit assignment is up, due next
Friday (8-21-15) before 9PM
Table 1. Data Collection
Subject Index
finger
length
Self
Partner
#1
name
Partner
#2
name
Partner
#3
name
Hand
Forearm
span
(Wrist to
(pinky elbow)
to
thumb)
Arm
length
(shoulder
to fingers
Arms
span
Height Foot length
Table 2. Data Analysis
Subject
Self
Partner
#1
name
Partner
#2
name
Partner
#3
name
Ratio
height to
forearm
Ratio
height to
arms span
Ratio
hand
span to
index
finger
Ratio arm
length to
index
finger
Ratio
arms
span to
forearm
Ratio of
your
hypothesis
Conclusions (only answers)
1.
2.
3.
4.
5.
6.
7.
What is the ratio of your height to your arms span?
Is your arm span the same as your height? How
about your group members?
What is the ratio of your height to your forearm?
What is the ratio of your hand span to your index
finger?
If the ratio is 2:1 what does it mean?
Compare yourself with your partners, does everyone
have the same ratio? Who does and who doesn’t?
Does your data support your hypothesis?