rjek.gerjk.bgrsebg.skrgjsr Flashcards
What is a fluid?
A substance that can flow and take the shape of its container.
Examples of fluids include liquids and gases.
What do WHMIS symbols represent?
Workplace Hazardous Materials Information System symbols that indicate hazards associated with materials.
WHMIS symbols help ensure safety in the workplace.
What is a slurry?
A mixture of solid particles suspended in a liquid.
Define a pure substance.
A material made of only one type of particle.
What are the types of mixtures?
Homogeneous and heterogeneous mixtures.
Homogeneous mixtures have a uniform composition, while heterogeneous mixtures do not.
What is a solution?
A homogeneous mixture where one substance is dissolved in another.
What does concentration refer to?
The amount of solute in a given volume of solvent.
What is solubility?
The ability of a substance to dissolve in a solvent.
What is the particle model of matter?
A model that explains the properties of matter in terms of particles in constant motion.
Define viscosity.
A measure of a fluid’s resistance to flow.
What is density?
The mass per unit volume of a substance.
What is buoyancy?
The ability of an object to float in a fluid.
What is pressure?
The force exerted per unit area.
What is a hydraulic system?
A system that uses liquids to transmit force.
What is a pneumatic system?
A system that uses gases to transmit force.
What are valves used for?
To control the flow of fluids in a system.
What is the purpose of pumps?
To move fluids from one place to another.
Give examples of fluids.
Water, oil, air, and alcohol.
What are safety rules in the lab?
Wear safety goggles, handle chemicals with care, and know emergency procedures.
How can you calculate solubility?
By determining the maximum amount of solute that can dissolve in a specific amount of solvent at a given temperature.
What can increase the rate of dissolving?
Stirring, increasing temperature, or increasing surface area of the solute.
How does temperature affect properties of fluids?
Increasing temperature typically decreases viscosity and increases solubility.
What is the relationship between viscosity and flow rate?
Higher viscosity results in a lower flow rate.
What are the states of matter related to the particle model?
Solid, liquid, and gas.
What is the relationship between density and buoyancy?
Objects with a density less than the fluid will float; those with greater density will sink.
What is Pascal’s Law?
Pressure applied to a confined fluid is transmitted undiminished in all directions.
How do you calculate density?
Density = Mass / Volume.
Name a real-life application of solubility.
Salt dissolving in water for cooking.
What are submarines and submersibles used for?
To explore underwater environments.
How do you calculate pressure in a hydraulic system?
Pressure is equal on both sides when there are two pistons.
What are the key differences between hydraulic and pneumatic systems?
Hydraulic systems use liquids; pneumatic systems use gases.
