Many Uses of Fluids
This substance has no fixed shape, can flow, and moves materials (even solids). Usually a liquid or a gas.
Fluid
A general term; this contains two or more pure substances, which have their own distinct properties (some of which may be hidden)
Mixture
Which of these is MOST insoluble in water?
-sugar
-salt
-hot chocolate powder
-baby powder
baby powder
The 4 main points of the particle model of matter. (S.P.A.M.!)
1. All matter is made up of tiny particles. Different substances have different particles.
2. The particles are always moving and vibrating
3. The particles in matter may be attracted to each other or bonded together
4. The particles have spaces between them
A mixture that is obviously two or more substances. ex. rocks in sand
Mechanical mixture
Give an example of a fluid.
Toothpaste, oil, slurry, etc.
A Mixture which looks as though it has only one set of properties.
Homogenous Mixture
If a substance can be dissolved in a particular solvent, it is ________.
Soluble
3 factors that affect the rate of dissolving
Temperature
Agitation (stirring, shaking)
Size of pieces (surface area exposed)
Universal solvent (this substance dissolves many other substances)
Water
This is a mixture of water and a solid (like dirt and water).
Slurry
A heterogenous mixture that cannot be separated by normal means. ex. milk
Colloid (an in-between mixture)
The __________ of a solution is the actual amount of solute in a specific amount of solvent,
and its limit is the __________ (maximum amount of solute that can be dissolved in a fixed volume of solvent at a given temperature).
concentration, solubility/saturation point
A heterogeneous mixture, in which the particles settle slowly after mixing. Ex. orange juice
Suspension (an in-between mixture)
A solution in which more solute can be dissolved in a specific solvent at the same specific temperature.
unsaturated solution
Solubility increases as the temperature of the solvent increases, because more space is provided between the particles for the solute particles to fit (dissolve) into. This is true for ______ & ______.
Solids & liquids
If the temperature of water increases (warm industrial wastewater poured directly into lakes and rivers) then there is less oxygen that can be dissolved in the water – thus, affecting the living organisms in the water. Less CO2 can be dissolved in the water as well, resulting in more GHG's = increasing global warming. What type of pollution is this?
Thermal pollution
A technology used to determine if a substance is pure or a solution.
Paper chromatography.
The distance a substance move up the chromatogram depends on its attraction to the paper. Those with a stronger attraction to the paper don’t move up as far as those with a weaker attraction.
C = m/V
C = 5 g chosolate / 100 mL water
C = ?
Concentration formula;
C = 5 g/ 100 mL
= 0.05 g/mL or 5% concentration
As the temperature increases, the solubility of a ________, in a liquid solvent decreases.
Gas
Ready for the quiz?
A. Yea!
B. Just need a bit more review
C. Uh oh...
D. I won't be here next class cuz I'll be sick...
If you're not here for the quiz, I'll know you picked D. >:(