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
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
What is average density?
What is the total mass of an object divided by the total volume
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 instrument measures the density of a liquid?
What is a hydrometer
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
Name three items that are considered more viscous:
What is honey, molasses, syrup, car oil, ketchup
400
What was Archimedes trying to measure? (2 things)
What is volume and/or if the crown was made of pure gold
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
Describe the 5 points of the particle theory/model
What is 1. all substances are made up of particles
2. particles in a pure substance are the same. Different pure substances have different particles
3. particles have space between them
4. particles always move and increase/decrease in movement because of temperature
5. particels in a substance attract each other. Strength of attractive forces depends on particle type.
500
Why does an astronauts weight change when on the moons surface but not his mass?
What is because he doesn't have gravity to make mass
500
Name three liquids that are considered less viscous:
What is water, milk, orange juice
500
How are fish able to dive or rise in water?
What is a swim bladder
500
What are balanced and unbalanced forces?
Balanced - what is two individual forces of equal magnitude and opposite in direction
Unbalanced - what is an individual force not being acted upon by a force of equal magnitude or opposite direction