List things that you consider to be not Lab Safe. (Minimum of 5 items) Do Now: List things that you consider to be not Lab Safe. (Minimum of 5 items)

T. Trimpe 2008 http://sciencespot.net/ What's Wrong? Lab Safety Challenge #1 T. Trimpe 2008 http://sciencespot.net/

Composition notebooks Take out your composition notebook Take out your agenda

Image: http://morrisonlabs.com/lab_safety.htm What’s wrong? Identify 6 different safety concerns shown in the picture below. Image: http://morrisonlabs.com/lab_safety.htm

The answers are … Don’t fool around during a lab. Always wear safety goggles when doing an experiment Always point test tubes and other items away from yourself and others when heating. Don’t eat or drink while in the lab. Keep hair and other flammable objects away from flames. Don’t leave a flame unattended. Image: http://morrisonlabs.com/lab_safety.htm

Essential Question: What are the steps scientists often use to solve problems?

Essential Questions: You need to answer the essential question at the end of lecture or for homework. They must be answered before the notebook is checked. Answered on your own time. Don’t forget!

How your notes should be organized What is science (Notes go here)

What is science? Process that uses observation and investigation to gain knowledge about events in nature

What is the scientific method? An organized set of investigation procedures used by scientists

Hypothesis Educated guess or testable prediction

Experiment Organized procedure or testing hypothesis

Control Standard for comparison

Constant Factor that does not vary in the experiment.

Independent Variable Factor that is adjusted by the experimenter (x-axis)

Dependent Variable Factor whose value depends on the independent variable (y-axis)

Scientific Law Rule of nature that sums up related observations to describe a pattern in nature EX: Law of Gravity

Organized procedure for testing hypothesis Scientific Theory Organized procedure for testing hypothesis EX: Black Hole Theory