WHMIS
What WMHIS symbol is represented by a skull and crossbones?
Posionous and infectious causing immediate harm
What is the first thing you should do after receiving a lab sheet?
Read it carefully
What state or states of matter are considered a fluid?
Liquid and gas
Buoyance opposes what force?
Gravity
What is the pressure applied when 2N is applied to 1cm2?
2Pa
Draw the WHMIS symbol for poisonous and infectious long term
!
How do you properly smell something in the lab?
fan the smell towards your nose
Define a slurry
A mix of a solid and a liquid (typically water)
What is density and how is it related to buoyancy?
1) The amount of particles in a given volume
2) if an object is less dense than the fluid it is in, it will float
What is the density of an object that has a mass of 10g and a volume of 2cm3
5g/cm3
What would be an example of a biohazard
Human fluids, bacteria, viruses
What do you need to do if you see something dangerous
tell the teacher
What is one of the three defining characteristics of a fluid?
1) either liquid or gas
2) can flow
3) you can easily poke your finger through it
How do you find the volume of an irregularly shaped object?
Place it in water and measure the amount of displaced water
What is the density of a fluid that has a mass of 15g and a volume of 16ml? Will it sink or float in water with a density of 1g/ml?
0.93g/ml, float
What would be an example of a flammable substance?
Gasoline
How do you properly mix fluids?
Pour one fluid into another while the beaker is on the table
Define viscosity
The resistance of a fluid to flow
What is Pascal’s law?
fluid in an enclosed container will exert pressure equally in all directions
What is the mass of a fluid with a density of 1.5g/ml and a volume of 5ml
7.5g
What would be a precaution for compressed gas?
Keep away from heat, do not drop, do not puncture
How do you properly view a liquid in a beaker or test tube?
From the side
What are 2 of the 3 ways that fluids can be used to help us perform work?
1) Transport solids (slurry)
2) Used to shape solids (melt and reshape)
3) Hold other solids
What is the unit of measurement for pressure?
Pascals
What is the area (rounded to the nearest hundredth) when the pressure is 150Pa and the force applied is 350N
2.33cm2