Safety Features 

• eyewash
• fire extinguishers
• fire blanket
• smoke detector
• heat sensor
• electrical power cutoff switch
• acid spill kit
• broken glass

Demo: Acetone (dissolving packing peanuts) & flammability 

Be sure you have been given the correct textbook 


HW: Corwin Textbook Questions pdf  (due Monday) 
        MSDS for Acetone  questions  (due Thursday)


     

Scientific Models
     simplify what we are trying to understand
     can be larger or smaller representations
     can merely be an idea...doesn't have to be a physical model

 Qualitative vs. Quantitative data
     qualitative data has no numbers
     quantitative data has measurements...this includes both a number + unit

Observation vs. Inference
     observation - uses your five senses
     inference - based on judgment or assumptions