ATTENTION:
Kindly note that you will be presented with 50 questions randomized from the NOUN question bank. Make sure to take the quiz multiple times so you can get familiar with the questions and answers, as new questions are randomized in each attempt.
Good luck!
CHM103
1 / 50
1. A liquid will "wet" a surface if: ______
2 / 50
An expression for the combined gas law can be expressed as ________
3 / 50
_________ of a gas is proportional to the mean kinetic energy of the molecules in a gas
4 / 50
The process of separating a pure substance from a solution is called _______
5 / 50
5. The Henry's law constant for helium gas in water at 30 °C is 0.00037 M/atm. When the partial pressure of helium above a sample of water is 0.650 atm, the concentration of helium in the water is __________ M.
6 / 50
Meter, kelvin, second and kilogram are examples of _______
7 / 50
In a gas. the molecules on the average are separated by large ______ distances
8 / 50
The individual pressure of a gas in a mixture of gases is called ______
9 / 50
A plot showing the variation of volume with temperature at constant pressure is called __________
10 / 50
-______is a state of matter that does not have a definite shape nor volume
11 / 50
Numerical value of the universal gas constant is ____ J/K/mol
12 / 50
12. A mixture of iron filings and copper filings could best be separated by _________
13 / 50
Constituents in a solution can be separated by applying the principle of ___________
14 / 50
At low temperature and high pressure, gases tend to __________
15 / 50
At constant temperature, the gas law that is most suitable is called _____ law
16 / 50
16. Which of the followings will not diffract X-rays?
17 / 50
Gas molecules confined to a container are in a state of ____________ motion
18 / 50
18. According to the kinetic theory of gases, a gas can be compressed much more than a liquid or solid because _________
19 / 50
The gas law that consider the total pressure of a gas as a function of the pressures exerted by the individual gases that make up the mixture is __________
20 / 50
20. A sample of oxygen occupies 47.2 liters under a pressure of 1240 torr at 25 $^{o}C$. What volume would it occupy at 25$^{o}C$ if the pressure were decreased to 730 torr?
21 / 50
The mathematical equation for Boyle's law can be written as ___________
22 / 50
A gas that obeys all the gas laws is called an ______
23 / 50
23. Which measurement describes the pressure of a gas?
24 / 50
At high temperature and low pressure, gases tend to undergo phenomena that is called ___________
25 / 50
Physical Chemistry is concern with two major aspects, namely ability to change and _____
26 / 50
26. The concentration of KBr in a solution prepared by dissolving 2.21 g of KBr in 897 g of water is __________ molal.
27 / 50
27. Which of these alkanes is expected to have the highest viscosity?
28 / 50
The rate at which gases diffuse is inversely proportional to the Square root of their ____________
29 / 50
The equation of ideal gas can be expressed as ______
30 / 50
A skillful process of identifying. substituting and using correct apparatus appropriately in the laboratory is called _____
31 / 50
31. An atom on the face-centre of a unit cell is shared by _________ unit cells.
32 / 50
The mathematical equation for Charles law can be written as ________
33 / 50
The Beckman thermometer IS used in the Beckman's apparatus for determining __________ of a substance
34 / 50
A homogenous materials that contain only one substance is called a ___________
35 / 50
For 1 mole of an ideal gas, a plot of PV against T will give a straight line whose slope is equal to __________
36 / 50
International system of unit or system international can be written as an acronym _______________
37 / 50
37. Distillation can be used to separate ________
38 / 50
38. In fractional distillation, a mixture of liquids is separated based on their _______
39 / 50
39. An ideal gas differs from a real gas in that the molecules of an ideal gas __________.
40 / 50
Apparatus that arc basically used for determining the melting points of substances are called ____________
41 / 50
41. The vapor pressure of pure ethanol at 60 °C is 0.459 atm. Raoult's Law predicts that a solution prepared by dissolving 10.0 mmol naphthalene (nonvolatile) in 90.0 mmol ethanol will have a vapour pressure of __________ atm.
42 / 50
42. Ethanol dissolved in water would be an example of ___________
43 / 50
The temperature, above which a substances can exist only in gaseous state is called _________
44 / 50
44. Which of the following is not a colligative property?
45 / 50
The volume occupied by 1 mole of oxygen gas at s.t.p. is ________ dm3
46 / 50
46. Which of the followings is not a characteristic of an ideal solution?
47 / 50
At constant pressure, properties of gases that undergo changes are _______
48 / 50
Temperature, length, time and mass are examples of ________
49 / 50
________ is an instrument that can be used to measure the strength of an acid or a base
50 / 50
50. What is the average speed (actually the root-mean square speed) of a neon atom at 27 C?
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