Unit 2: How do we use matter? Flashcards
1
Q
Crystalline Solid
A
- Particles are completely ordered and evenly stacked to make crystals
- Crystal Lattice Structure
2
Q
Polycrystalline Solid
A
- Solids that are composed of many crystallites of varying size and orientation.
3
Q
Amorphous Solid
A
- a solid that lacks an ordered internal structure.
- Randomly organized atoms/molecules
4
Q
Solution
A
- 1 phase
- Solute Dissolves completely in Solvent
- Unintelligible from human eye
5
Q
Phase
A
- A phase is a physically distinctive form of matter, such as a solid, liquid, gas, or plasma. A phase of matter is characterized by having relatively uniform chemical and physical properties. Phases are different from states of matter.
- Can refer to a homogenous mixture
6
Q
Suspension
A
- Particles of the material do not dissolve
- Heterogenous Mixture
- Solid Particles Sufficiently Large for Sedimentation
- Solute is less dense than the solvent
- Sometimes can be seen from human eye
7
Q
Precipitate and Supernate
A
- 2 visible parts
- Precipitate (solute)
- Supernate (solvent)
- Immiscible
- Solute is denser than solvent
- Discernible from human eye
8
Q
Colloids
A
- Lie between solutions and suspensions.
- Most of a colloid is immiscible
- Stabilized by adding emulsifiers
- (gels, sols and emulsions) - Colloidal Systems
9
Q
Emulsions
A
- Adding external substance to immiscible liquids
- Molecules have different ends that are compatible with different substances
- Hydrophobic and Hydrophillic
10
Q
Gel
A
sol in which the solid particles are meshed such that a rigid or semi-rigid mixture results.
11
Q
Sol
A
A sol is a type of colloid in which solid particles are suspended in a liquid. The particles in a sol are very small.
12
Q
Solute
A
- Substance added to a base
- Can be solid, liquid or gas
13
Q
Solvent
A
- Substance that additants are added to
- Usually liquid or gas
14
Q
Osmosis
A
- Movement of water across a semipermeable cell membrane from a high concentration of water to a low concentration of water.
15
Q
Dialysis
A
- Using a semi-permeeable membrane to filter bodily fluids from blood.
