Phase Change
The type of energy that changes during a phase change.
What is potential energy?
Phase of matter that is described as a regular, geometric pattern
What is a solid?
The conditions under which a real gas will behave like an ideal gas.
What is high temperature and low pressure?
The type of solution (unsaturated, saturated, supersaturated) that is made when 20g of NaCl is added to 100g of water at 60C
What is unsaturated?
The substance with the highest boiling point between CO2, HF, O2, and H2Se
What is HF?
The type of energy that changes when temperature changes
What is kinetic energy?
Two or more elements chemically combined in a fixed proportion
What is a compound?
Standard pressure in kPa and temperature in Kelvin
What is 101.3 kPa and 273K?
The type of solution (unsaturated, saturated, supersaturated) that is made when 20g of NaCl is added to 50g of water at 20C
What is supersaturated?
The description of the motion of the particles in an ideal gas
What is random, constant straight-line motion?
The amount of heat lost by 33g of water when it changes by 25C.
What is 3448.5 J ?
Two categories of matter that are considered substances
What are elements and compounds?
The relationship between pressure and volume as a graph
What is (see teacher drawing)?
The molarity of a solution made with 1.25 moles of solute in 100mL of solution
What is 12.5M?
The dot diagram of N2
What is (see teacher drawing)?
The amount of heat gained by 234g of water when it boils
What is 528,840 J?
Takes the shape but not the volume of its container
What is a liquid?
The new volume of 250mL of gas at constant temperature when the the pressure doubles from 1 atm to 2 atm.
What is 125mL?
The grams of NaCl required to make 1L of a 2.5M solution (GFM=58 g/mol)
What is 145g of NaCl?
The effect on the solubility of NaCl when pressure is increased
What is no effect?
The amount of heat lost by 468g of water when it freezes (in scientific notation with correct # of sig figs)
1.56 x 10^5 J
Separation technique that utilizes the different boiling points of the substances in the mixture
What is distillation?
The new volume of 550.0mL of gas that starts at 273K and a pressure of 1.5atm when the pressure is decreased to 0.50atm and the temperature increases to 298K. (answer must be to the correct number of sig figs and may require scientific notation to accomplish that)
What is 1800 mL or 1.8 x 10^3 mL or 1.8 L
The mass of solute in 150g of solution with a concentration of 1.6ppm (must be in scientific notation with the correct sig figs)
What is 2.4 x 10^-4 g?
The moles of water vaporized when 6.1 x 10^4 J of heat is absorbed (answer must be to the correct number of sig figs) GFM = 18.02 g/mol
What is 1.6 moles?