States of Matter

Question 1

Characteristic/s of solids

I. Molecules are packed closely
II. Highly compressible
III. Flows and assumes shape of container

Answer 1

I. Molecules are packed closely

Question 2

A compressible fluid and has no definite shape or volume, but occupies the entire container

Answer 2

Gas

Question 3

Law that defines the relationship between the volume of a gas (V) and pressure (P) if the temperature and amount of gas are held constant

Answer 3

Boyle’s Law

Question 4

Which gas law relates volumes and temperature at constant pressure?

Answer 4

Charles’ Law

Question 5

A sample of gas occupies 12L under a pressure of 1.2 atm. What would its volume be if the pressure were increased to 2.4 atm?

Answer 5

6L

Question 6

What is the equation of the Ideal Gas Law?

Answer 6

PV=nRT

Question 7

Molar gas constant, R has a value of?

Answer 7

0.0821 L·atm·K-1·mol-1

Question 8

Which of the following statements is correct?

A. Gases are liquefied at low temperature and low pressure
B. Gases are liquefied at high temperature and high pressure
C. Gases are liquefied at low temperature and high pressure
D. Gases are liquefied at high temperature and low pressure

Answer 8

C. Gases are liquefied at low temperature and high pressure

Question 9

Which state of matter have molecules that are close but are randomly arranged?

Answer 9

Liquids

Question 10

Measure of the inward forces that must be overcome to expand the surface area of a liquid

Answer 10

Surface tension

Question 11

Which of the following is TRUE regarding solids?

A. Solids are less dense than gases and liquids
B. Most solids melt upon cooling
C. Solids are very compressible
D. Solids are rigid and have definite shapes

Answer 11

D. Solids are rigid and have definite shapes

Question 12

Crystalline solids:

I. have definite shape
II. orderly arranged
III. have sharp melting points

Answer 12

I, II, and III:

Crystalline solids have definite shapes, are orderly arranged, and have sharp melting points

Question 13

Type of unit cell exhibited by NaCl

Answer 13

Cubic

Question 14

Ability of a compound to crystallize as more than one distinct crystalline species with different internal lattices

Answer 14

Polymorphism

Question 15

Different polymorphic forms of a substance usually exhibit different:

I. X-ray diffraction patterns
II. Stability activity
III. Dissolution behavior

Answer 15

I, II, and III:

Different polymorphic forms of a substance usually exhibit different x-ray diffraction patterns and physical properties (stability, and dissolution behavior)

Question 16

An example of a solid which exists in triclinic form

Answer 16

Boric acid

Question 17

An example of a solid which exists in rhombic form

Answer 17

Iodine

Question 18

An example of a solid which exists in monoclinic form

Answer 18

Sucrose

Question 19

It is the third type of liquid crystals

Answer 19

Cholesteric (chiral nematic state)

Question 20

Complex formed when solvent is incorporated within the crystal lattice

Answer 20

Solvate

Question 21

The most important property of the solid state

Answer 21

Definite shape (rigid) and definite volume

Question 22

Which of the following phrases best described amorphous solids?

A. Possess great disorder and are devoid of any organized structure
B. Do not occur in characteristic geometrical shapes
C. Show fracture in an irregular manner when hammered gently
D. All of the Choices

Answer 22

All of the choices