Concentration and Solubility
When discussing the amount of solute dissolved in a solvent, you use this term (can be high or low)
Concentration
All matter is made up of this
Tiny particles
Heterogenous mixture
What is the formula to calculate density?
Density = Mass / Volume
Which type of matter can be compressed the most?
gasses
The substance that gets dissolved is called this, the substance that does the dissolving is called this
Solute, Solvent
What are the three states of matter
Solid, Liquid, Gas
If you can not see the different elements in a mixture, it is called this
Homogenous mixture
You emptied a 20mL of oil over a frying pan in 10 seconds. What is the flow rate of the oil?
Flow rate = mL/second = 20mL/10seconds = 2mL/s
What is the formula to calculate pressure?
pressure = force / area
For solids, when temperature increases solubility does this
Increases
True or False, particles are always attracted to each other
False! Only sometimes. Think of oil and water
This technique tests to see whether a substance is a pure substance or solution
Paper Chromatography
What happens to the particles of a material as its density increases?
The particles will become packed together and have less space between them
How does a hydraulic device differ from a pneumatic device?
hydraulic devices use liquids under pressure and pneumatic devices use air under pressure
For gasses, when temperature increases solubility does this
Decreases
True or False. Particles in solids do not have spaces between them
False! All particles have spaces between them
In our Lab we dissolved sugar in water. It became this type of mixture
What are the two ways you could increase density of an object?
Increase the mass while keeping the volume the same or decrease the volume while keeping the mass the same
Why is it important that hydraulic and pneumatic devices are completely sealed?
air or liquid could leak and the system will not work as well or could fail
If the exact amount of solute has been added to a solvent where no more can be dissolved, it is called this
Saturated
Two ways to make a solute dissolve in a solvent FASTER is ....
Increase the temperature. Agitate/stir the solution. Increase the surface area (individual particles instead of stick together)
Dust in air is an example of this kind of mixture
Suspension
You want to increase the viscosity of a liquid. To do this you must 1) ________ temperature. 2) Why?
1) DECREASE 2) this increases attractive forces between liquid particles, making it more viscous (flows more slowly).
What is Pascal's Law?
a force applied to a fluid is distributed equally through all parts of the fluid