click below
click below
Normal Size Small Size show me how
Chemistry QTR 2
Chemistry Quiz 3
Question | Answer |
---|---|
True Solution | Homogenous mixture of two or more substances |
Tinsure | Solvent is alcohol |
Aqueous SOlution | Solvent is water |
Alloy | Solid mixture |
Solute | The substance that is dissolved |
Solvent | Substance doing the dissolving |
Vechile | Another word for solvent |
Solubility | How well something dissolves |
Polar Molecule | Two or more different atoms creating electronegativity |
Non-Polar Molecule | Two or more of the same atom |
Concentration | Amount of solvent |
diluted solution | Very low amount solute |
Concentrated solution | High level of solute |
Saturated solution | Holds all of the solute possible at that temperature and pressure |
Unsaturated | Not reached saturation |
Supersaturated | The solution contains more solute than usual. Is very unstable. |
% by mass | Mass of solute/ total weight of solution x 100 |
% by volume | Volume of solute/ total volume of solution x 100 |
Ratio | weight of solute to solution |
Parts per million | mg of solute/L of solution |
Parts per billion (ppb) | ug of solute/L of solution |
Parts per trillion (ppt) | ng of solution/ L of solution |
Index | concentration of formaldehyde in embalming fluid |
Factors influcing solubility | Nature of solvent, temperature, pressure |
How does nature of solvent affect solubility? | Like dissolves like. Polar dissolves polar, non polar dissolves non polar |
How does temperature affect solubility? | Solubility of gas decreases as temperature increases. Hot water embalming is less effective |
How does pressure affect solubility? | Solubility of gas increases as as partial pressure above solution is increased |
Relationship between embalming and osmosis? | Normal moisture- slightly hypotonic Edema- hypertonic Dehydrated- hypotonic |
True solution characteristics | Particle size < 1 nm Invisible Particles pass through membranes and filters Molecular movement Particles do not settle |
Colloids | Particle size 1-100 nm Visible with electron microscope Particles pass through filter but not membrane Brownian (random) movement Particles do not settle |
Suspension | Visible by naked eye Move by gravity Particle size >100 nm Particles do not filter Settle |