Topic 1 and 2 - Review
True or False - There are 3 states of matter.
False - There are 4: solid, liquid, gas, and plasma.
The formula for density.
Density = Mass / Volume
The most common device for measuring air pressure.
Barometer
A mixture in which the composition is uniform throughout the mixture.
Homogeneous
When mixing Kool-Aid and water, the water would be considered this.
The solvent
The state of matter that has neither a definite shape or volume.
Gas
The viscosity of a fluid affects its __________.
flow rate
Give an example of a pneumatic device.
Air compressor, dentist drill
Used to measure air pressure.
Barometer
The thickness or thinness of a fluid is called this.
Viscosity
When no more solute can be dissolved in a solvent at a given temperature it is said to be...
A saturated solution
When a material has many particles packed tightly together it is "more/less" dense than one with few particles.
More dense
Give an example of a hydraulic device.
Jaws of life, jack for a vehicle
A heterogeneous mixture in which particles do not settle.
Colloids
What does WHMIS stand for?
Workplace Hazardous Materials Information System
Stirring, breaking apart and heating a substance up are all ways we can increase the rate the substance __________.
Dissolves
Things that are buoyant "float/do not float?"
float
Define a pneumatic system.
A pneumatic system is a system that uses air under pressure to transmit a force.
A mixture of two or more substances that are not uniform.
Heterogenous
A device that transmits an applied force through a liquid to move something else by means of pressure is a __________.
hydraulic system
You find this WHMIS symbol on boxes for needles in public.
Biohazard
If a grape has a density of 0.8g/mL and water has a density of 1.0g/mL, do you expect the grape to float?
Yes
Define hydraulic systems.
Hydraulic systems use liquid to transmit power.
This unusual change of state occurs when either a solid turns into a gaseous state of a gas turns into a solid without becoming a liquid first.
Sublimation
A system in which a gas, such as air, transmits a force exerted on the gas in an enclosed space is a __________.
pneumatic system