WHIMS
What does WHMIS Stand for and why is it important?
WHMIS stands for Workplace Hazardous Materials Information System.
What is the formula to calculate the density of a liquid?
the formula to calculate density is density (d) = mass (m) / volume (v).
Define viscosity and explain why it is important in selecting fluids.
Viscosity is a measure of a fluid's resistance to flow. It is important in selecting fluids because it determines how easily a fluid can move through a system.
Give an example of a technology based on the solubility of materials.
Mining salt or potash by dissolving them in water is an example of a technology based on the solubility of materials.
Define hydraulic systems and provide an example of their use in everyday technology.
Hydraulic systems use liquid to transmit power and are commonly found in devices like car brake systems.
Explain two safety precautions to follow when handling substances at home.
Two safety precautions are wearing gloves and eye protection when handling chemicals, and ensuring proper ventilation in the area.
Explain why some materials are prepared as fluids for transport or processing.
Materials are prepared as fluids to facilitate transport, processing, or use, making it easier to move them from one place to another or mix them with other substances.
How does density relate to the particle model of matter?
Density is a measure of how much mass is contained in a given volume. In the particle model of matter, denser materials have particles packed more closely together.
Explain how flow rate and viscosity are important in the development of motor oils.
Motor oils need to have the right viscosity to flow well at different temperatures and lubricate engine parts effectively.
Explain the concept of Pascal's Law and how it applies to hydraulic systems.
Pascal's Law states that a change in pressure applied to an enclosed fluid is transmitted undiminished to all portions of the fluid and vessel walls. In hydraulic systems, this means that a small force applied to a small area can create a larger force on a larger area.
Describe the meaning of a WHMIS symbol and give an example.
A WHMIS symbol is a standardized symbol that indicates the specific hazards of a material. An example is the skull and crossbones symbol which indicates the material is toxic.
Describe an example of a household material that is a fluid.
An example of a household material that is a fluid is dish soap.
Describe a method to alter the density of a fluid
One method to alter the density of a fluid is by adding solutes such as salt to change the mass of the solution without significantly changing the volume.
Describe a technology used to move fluids from one place to another.
Oil and gas pipelines are technologies used to move fluids like crude oil and natural gas over long distances.
Describe how changes in the area of a piston affect the force exerted in a hydraulic system.
In a hydraulic system, the force exerted is directly proportional to the area of the piston. Increasing the area of the piston increases the force exerted.
Why is it important to follow WHMIS guidelines in a laboratory setting?
It is important to follow WHMIS guidelines in a laboratory setting to ensure the safety of lab workers, prevent accidents, and properly handle hazardous materials.
How does temperature affect the flow rate of a liquid?
Generally, as temperature increases, the flow rate of a liquid also increases due to decreased viscosity.
What is buoyancy and how does it change with increasing salt concentration in water?
Buoyancy is the upward force exerted by a fluid that opposes the weight of an immersed object. Increasing salt concentration in water increases its density, affecting buoyancy by making objects more buoyant.
Construct a scenario where pressure in fluids is a crucial factor.
In a hydraulic system, pressure in fluids is crucial for transmitting force from one point to another, such as in car brakes or construction equipment.
Give an example of a real-world application where understanding pressure in fluids is crucial for safety.
Understanding pressure in scuba diving is crucial for safety to prevent decompression sickness and ensure proper breathing at different depth
How can WHMIS symbols help prevent accidents when working with substances?
WHMIS symbols provide clear and easily recognizable warnings about the hazards of substances, helping workers identify and take appropriate precautions when handling them.
Compare and contrast the properties of gases and liquids.
Gases have lower density, are compressible, and take the shape of their container, while liquids have higher density, are not easily compressed, and maintain a definite volume.
Calculate the density of a liquid with a mass of 50g and a volume of 25mL
Density = mass / volume = 50g / 25mL = 2 g/mL.
Design a device that utilizes the transfer of fluids to apply a force or control motion.
A hydraulic lift system that uses fluid pressure to lift heavy objects is an example of a device that applies force through fluid transfer.
Design a hydraulic system scenario where the principles of pressure and fluid transfer are essential for its function.
A hydraulic car lift system where fluid pressure is used to raise and lower the car, demonstrating the principles of pressure and fluid transfer in action.