LIQUIDS
These are weak intermolecular attractions that occur between two non - polar substances.
a. hydrogen bond
b. london dispersion force
c. dipole-dipole
b. London Dispersion Force
These are a class of solid materials that lack the long-range order and regular crystalline structure.
a. Crystals
b. Amorphous solids
c. Amorpohus silica
b. Amorphous solids
In saltwater, which is the solute?
Salt
The energy of an object in motion.
100°C
Drinking water in a straw exhibits what type of property in liquid?
Capillary action
Change from gas to solid without becoming a liquid.
Deposition
Brass can be classified as what type of solution?
A thermodynamic quantity that represents the total heat content of a system.
A substance at a temperature and pressure above its critical point, where liquid and gas phases merge is called a?
Supercritical fluid
It emphasizes the role of particle motion, intermolecular forces, and arrangement of particles in determining the macroscopic properties of these states of matter.
It describes the conditions under which a substance can exist simultaneously in both the liquid and solid phases.
Phase Diagram
A solution prepared by dissolving a gas in water at high pressure will show decreased solubility when.
A. decrease in pressure
B. increase in pressure
C. decrease in temperature
D. constant pressure
E. increase temperature
a. decrease in pressure
If an ammonium nitrate dissolves in water and the temperature of the solution decreases, the process is.
A. exothermic ΔH > 0
B. endothermic ΔH < 0
C. endothermic ΔH > 0
D. exothermic ΔH < 0
E. neutral ΔH = 0
C. endothermic ΔH > 0
A solution expressed in ppb instead of ppm indicates a?
A. dilution
B. smaller amount
C. contains gas only
D. solvent is solid
E. more concentration
b. smaller amount
The slower diffusion of liquids compared to gases is caused by this factor.
Strong Intermolecular Force
Ice cubes left on a plate at room temperature gradually turn into phase transition due to an increase in particle kinetic energy. Which phase change happened?
Melting
What is the mole value of water if it has a mass of 1.8 kg? In whole number
100 mol
If the heat gained by the surroundings is 500 J, what is the energy content of the system?
-500 J
What are the three endothermic phase change
Melting
Vaporization
Sublimation
This factor between bonded atoms dictates whether a bond is polar or nonpolar.
Electronegativity
What factors can influence an element to change its crystal structure?
Temperature and Pressure
Enumerate 3 concentration units that use MOLE in finding the concentration.
Molarity, Molality, Mole Fraction
During a chemical reaction carried out in a perfectly insulated container, the system is reported to have a heat change of −120 J. However, a student claims that the surroundings also experienced a heat change of −120 J. Is the claim of the student correct or no? Justify your answer by determining the enthalpy of the surrounding.
The claim is incorrect because the surroundings must have a heat change of +120 J
What is my grade in Gen Chem 2 during my SHS days?
99