WHMIS and the classification of matter - Mr. Murray Science 8
WHMIS AND THE CLASSIFICATION OF MATTER Science 8 WHAT DO YOU THINK WHMIS STANDS FOR? Workplace Hazardous Materials Information System HOW TO BE SAFE IN A SCIENCE
CLASSROOM THINGS TO BE AWARE OF BEFORE ENTERING A LAB HOW YOU SHOULD BE DRESSED DURING A LAB Exits NO contacts
Fire Alarm Safety glasses Fire Extinguisher Closed toed shoes Eye wash station No dangling jewelry
Fire blanket Hair tied back Info on chemicals No baggy clothes HOW SHOULD YOU ACT IN THE LAB
HOW SHOULD YOU WORK WITH OPEN FLAMES No horseplay Know how to put it out Follow all instructions No flammables nearby
HOW YOU SHOULD WORK WITH CHEMICALS No direct touching or smelling unless teacher says that it is okay Wash skin with SOAP if contact occurs Flush out eyes if contact occurs
HOW YOU SHOULD CLEAN UP SPILLS Tell teacher first while someone stays with the spill Wipe away WHAT SHOULD YOU DO IF YOU BREAK GLASSWARE WHAT WILL HAPPEN IF
YOU ACT IRRESPONSIBLY Tell teacher first while someone stays with it Kicked out of lab, but report still due Sweep glass, wipe with moist paper towel
Kicked out of all future labs Never clean yourself, have the teacher do it! WHMIS MATCHING CLASSIFICATION OF MATTER Anything that has mass and volume is referred to as
matter. Basically anything that has a weight and size is considered matter. Matter Everything with Mass and Volume Pure Substance
Mixture Made of more than 1 substance Made of just ONE substance Element Compound Solution Suspensio A substance is n Simplest substance, Made of more than dissolved in another
found on the periodic table one element Tiny particles in a liquid that will settle Mechanical Mixture Can be separated
by hand DESCRIBING MATTER USING PHYSICAL PROPERTIES A physical property is something you can observe without changing the matter you are observing into something else What are some physical properties we would be interested in when describing matter?
MELTING AND BOILING POINT The temperature the substance either melts or boils at CONDUCTIVITY How well electricity moves through it
SOLUBILITY How well something dissolves HARDNESS How resistant something is to scratches
LUSTRE Reflects light, shiny VISCOSITY How thick a liquid is, how much it resists flow
MALLEABILITY Capable of being beat into a flat sheet DUCTILITY Capable of being stretched into a wire DENSITY
How tightly packed something is Density = Mass / Volume
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