Topic 1
Definition of WHMIS
What is Workplace Hazardous Materials Information System
Give two characteristics of Compounds and give two examples
Made of two or more elements, have very strong chemical bonds, individual
parts lose their individual characteristics when they combine, Salt , H20 (water)
Definition of viscosity
What is the thickness or thinness of a fluid
Explain which of the three states of matter can compress the most.
Gas can compress the most because it has a lot of space between the particles.
The other states of matter can’t compress or very little because there isn’t much
space between the particles
Give some characteristics of a gas
What is no definite shape, no definite volume, most not affected by gravity, particles are spread far apart
Give two characteristics of Homogeneous solutions and give one example.
Can’t see the individual parts, the substances keep their individual characteristics, no chemical bonds, can separate by boiling, Sugar water, tea, orange juice without the pulp
Definition of buoyancy
What is the tendency of objects to sink or float in a fluid
describe how a hydraulic system works
what is Hydraulics are liquids under pressure. A hydraulic system works by applying pressure to one end of the liquid and the liquid then transmits that force through the liquid to move something
Give some characteristics of a liquid
What is no definite shape, definite volume, affected by gravity
Give two characteristics of Heterogeneous solutions and give one example.
Can see the different parts, no chemical bonds, can separate by hand or filter, chocolate chip cookie, pizza, salad
Definition of density
What is the mass per unit volume of a substance
Give two examples of how we use Pneumatics in everyday life to do work.
Air brakes on a truck, dentist drill, air gun, dirt tamper, jack hammers
What are the 5 parts of the particle model of matter
What is Everything is made of particles
Particles are always moving (warm them up and they speed up, cool them down
and they slow down) There are spaces between the particles
Particles have attractive forces
Particles in a pure substance are the same
Give three factors that affect the rate of dissolving and explain how each affects the rate of dissolving in detail
Heat, when you heat the particles they speed up and bump into each other more, so they can start pulling each other apart faster Stirring (agitation) – when you stir a substance, the particles speed up and bump into each other more, so they can start pulling each other apart faster, More surface area, greater surface area means more particles are exposed to each other, so therefore they can bump into each other more and pull each other apart faster
Describe the relationship between buoyancy and density
What is the more dense an object is, typically the less buoyant it will be. Also, object tend to be more buoyant on denser fluids
Describe how pressure changes with altitude and explain why this happens
When you go up in altitude, there are less air particles above you pushing down, which then means that there is less pressure pushing down on you
Give some characteristics of a solid
What is definite shape, definite volume, particles very closely packed, affected by
gravity.
Give one example of things being dissolved and be able to tell me what the solute is and what the solvent is.
Salt being dissolved in water – Salt is the solute and water is the solvent.
Definition of Archimedes Principle
What is force pushing up on an object is equal to
the weight of the fluid displaced by the object.
What is Pneumatics and describe how it works
Pneumatics is gas under pressure. The operation of pneumatics is based on
the fact that gas can be compressed. As gas is decompressed, the particles
start to move apart suddenly, creating a steady force to perform tasks