Matter, Mixing, and Dissolving
Density
Flow Rate and Viscosity
Buoyancy
Fluid Systems and Pressure
100
What does WHMIS stand for?
What is Workplace Hazardous Materials Information Systems
100
What is the formula to calculate density?
What is mass/ volume (mass divided by volume)
100

What is viscosity?

What is the thickness or thinness of a liquid.  the internal resistance to flow

100
What is the force that opposes buoyancy?
Gravity
100
What is the formula to calculate pressure?
What is pressure = force/area (force divided by area)
200
What is the difference between homogenous and heterogeneous?
What is homogenous - same structure quality or kind. pure heterogeneous - made up of parts. mixed
200
Compare the densities of solids, liquids, and gases
solids - very dense liquids - some what dense gases - not dense
200
How does the viscosity of a liquid change in relation to temperature?
What is when temperature increases the viscosity decreases and as it cools the viscosity increases.
200

describe using forces how a SCUBA diver ascends to the surface

buoyant force is greater then the force of gravity

200
What is a pneumatic system?
What is a system in which a gas, such as air, transmits a force exerted on the gas in an enclosed space?
300
What is the difference between a solvent and a solute?
What is solvent - a substance that dissolves a solute to form a solute solute - a substance that dissolves in a solvent
300
Is density measured in grams, grams/centimetre cubed, or millilitres?
What is grams/centimetre cubed
300
How does the viscosity of a gas change in relation to temperature?
What is as gases are heated, particles gain energy and move faster and the viscosity increases. As gases are cooled, particles slow down and the viscosity decreases.
300

what is decompression sickness

at greater water pressures, nitrogen gas dissolves into the blood and tissues.  if you dont ascend slow enough, the sudden change in pressure causes the nitrogen gas to bubble out of the blood and tissues

300
What is a hydraulic system? (definition)
What is a device that transmits an applied force through a liquid to move something else by means of pressure
400
What is the difference between saturated and unsaturated?
What is saturated - solution that contains a specific amount of solvent at a specific solution at a given temperature. unsaturated - a solution in which more of the solute could dissolve in a specific amount of solvent at the same temp.
400
What is mass?
What is the amount of matter in a substance
400

what is the test that we use to test for viscosity called

the ramp test

400

As a flame heats air in a hot air balloon it starts to rise. Explains the chemistry behind why this happens.

The volume of the gas increases because the molecules in the gas are spaced further apart because they are heated. The air molecules become less dense & more bouyant than the cooler air in the surrounding atmosphere.

400
What is an example of a hydraulic system and an example of a pneumatic system?
What is garbage trucks (hydraulic) What is buses (pneumatics)
500

Which of the following would have the fastest rate of dissolving? EXPLAIN WHY


a sugar cube in hot water

a sugar cube in cool water

powdered sugar in hot water

powdered sugar in cool water

 

powdered sugar in hot water 

-higher temp

-smaller surface area pp poopoo


500

Frank has an eraser. It has a mass of 4g, and a volume of 2cm3. What is its density?

2 g/cm3

500

How is viscosity & density affected when a fluid is heated?

viscosity decreases & density decreases

500
How are fish able to dive or rise in water?
What is a swim bladder
500

If the output piston has a pressure of 30 Pa.  how much force would need to be exerted on a input piston with a area of 5m2

150N

M
e
n
u