pla Flashcards
Define fluid:
A liquid or a gas with no set shape
What are hazard symbols? What do the different shapes represent?
A warning symbol on hazardous materials:
Yellow triangle = caution
Orange diamond = warning
Red octagon = danger
What are WHMIS symbols?
Workplace Hazardous Materials Information System
Define “slurry” and provide an example.
A mix of liquid and solid (mud)
Define pure substance and provide an example.
A substance made up of only one thing (water)
Define mixture and provide an example.
2 or more pure substances mixed together
Heterogeneous mixtures:
Mechanical mixture which all the substances are easy to see.
Suspensions:
A cloudy mixture with Pisces from one substance that stays in the middle of another substance it normally separates(mud)
Colloids:
Cloudy mixture where everything is too small to separate(milk)
Homogenous mixtures:
A mixture that looks like its only one substance or solution
Solutions
homogeneous mixture
What is paper chromatography and why is it useful?
If the substance you are testing is not pure it will separate but if it’s sure there will be no separation
Define solute and solvent and provide an example of each.
The solute is a substance that dissolves into the solvent (Koolaid powder and water)
What is concentration?
The amount of solute
Which has a higher concentration: 10g of salt in 25mL or water OR 15g of salt in 100mL of water?
10 in 25