WHMIS & Lab Safety
States of Matter
Pure Substances & Mixtures
Mixing & Dissolving
100
What does WHMIS stand for?
Workplace Hazardous Material Information System
100
What is matter?
Anything that has weight and takes up space
100
What two categories can all matter be broken down into?
Pure Substances & Mixtures
100
The substance being dissolved is called the ______
solute
200
Which shape indicates the strongest warning? Octagon, Diamond, or Triangle? 
Octagon
200
When a gas looses energy, it becomes a _____ ?
Liquid
200
Coffee would be an example of what type of mixture?
Homogenous mixture
200
If my hot chocolate is diluted I have a _____ amount of solute to solvent.
Small
300
Which symbol represents Dangerously Reactive?
7
300
Which is the only state of matter that does not flow?
Solids
300
When a mixture has 2 or more properties that are visible it is called a ________ mixture.
Heterogenous
300
When you mix more solute into a saturated solution, the solution now becomes ________
Supersaturated
400
Which symbol represents Immediate and Serious Toxic Effects?
1
400
Sublimation is the change of state from _____ to _____
Solid to gas. Think dry ice!
400
Colloids & Suspensions are both types of what mixtures?
Heterogenous
400
What are two things that effect the rate of dissolving?
Agitation or stirring
Heat
Size of solute
Pressure
500
Name two lab safety rules!
Keep your work area clean
No Food or Drink during labs
Wear proper Eyewear, when necessary
Always have your hair pulled back
No running while labs are going on
Report ALL spills to the teacher, regardless of how small
Safely dispose of all chemicals
If something breaks, clean it up properly
Wipe down all surfaces when you are done
Never smell chemicals directly, always waft
Never experiment on your own
Follow the instructions
Wear gloves when dealing with chemicals.
500
What are the 4 points of the Particle Model of Matter?
All matter is made up of tiny particles
The particles of matter are always moving
The particles have space between them
Adding heat to matter makes the particles move faster
500
Come up to the board and fill in the following diagram:
500
Which solution is more concentrated?
23g / 100mL OR 13g / 50mL
13g / 50mL