States Of Matter

Question 1

Gases behave ideally at low temperature and high pressure.
true/false

Answer 1

False
It behaves ideally at low pressure and high temperature

Question 2

Which has higher melting point at the same molecule weight?
Non polar solid/polar solid

Answer 2

Polar solid

Question 3

Ionic solids comprises of ___ and are held together by____

Answer 3

Positive and negative ions
Electro static forces

Question 4

Which is the liquid used in barometer?

Answer 4

mercury

Question 5

What are examples of homogenous mixture

Answer 5

Soda + water
Air
Alcohol + Water

Question 6

Extensive properties is independent of the quantity of the substance.
True/False

Answer 6

False

Question 7

Examples of intensive property

Answer 7

Boiling point, Melting point and specific gravity

Question 8

What are the four types of crystalline solids?

Answer 8

Ionic solids, Covalent solids, Molecular solids, Metallic solids

Question 9

What is the equation for Charles law

Answer 9

V/T=K

Question 10

Why are metallic solid good conductors of electricity?

Answer 10

The electron in the overlapping orbital regions are extremely mobile which results in high electrical conductivity.

Question 11

Example of Ionic solids ___

Answer 11

NaCl

Question 12

Examples of crystalline solids

Answer 12

NaCl, Diamond

Question 13

Ideal gas equation

Answer 13

PV= nRT

Question 14

What is melting point?

Answer 14

Temperature at which solid is converted into liquid phase

Question 15

Molecular solids are poor electrical conductors.
True/False

Answer 15

True

Question 16

Pure substance is divided into __

Answer 16

element and compound

Question 17

Covalent solid comprises of ____ and are held together by ___

Answer 17

Atoms
Covalent bonds

Question 18

What does the avogadro’s law state

Answer 18

The volume is equal to the number of moles at constant temperature and pressure.

Question 19

Which type of solid has unorganized structure?

Answer 19

Amorphous solid

Question 20

The chips used in computer, cellphone and other electronic devices are made of?

Answer 20

Silicon, arsenic and germanium

Question 21

What does the kinetic molecular theory of gases state?

Answer 21

The kinetic molecular theory of gases state that the bulk properties of a gas results from the action of individual molecules comprising the gas.

Question 22

Example of covalent solid

Answer 22

Diamond

Question 23

In alcohol + water solution, which is the solvent and solute

Answer 23

Solvent - Alcohol
Solute - Water

Question 24

Which type of solid has repeating structure?

Answer 24

Crystalline solid

Question 25

What is a compound?

Answer 25

It is a combination of two or more substances with fixed composition, different physical and chemical properties from their basic elements.

Question 26

What are the examples of heterogenous mixture?

Answer 26

Oil and water
Concrete

Question 27

Molecular solids are comprised of ___ and are held together by ___

Answer 27

Molecules
Intermolecular attractive forces

Question 28

What are the two types of mixture?

Answer 28

Homogenous
Heterogeneous

Question 29

Why are the particles closely packed in solids?

Answer 29

Due to it’s strong attractive forces.

Question 30

Metallic solids are comprised of ___ and are held together by ___

Answer 30

Metal atoms
Metallic bonds

Question 31

How are metallic bonds formed

Answer 31

They are formed by the overlapping of orbitals of metal atoms which result in high electron density around positive metal nuclei

Question 32

What is used in filling teeth?

Answer 32

Amalgam(Ag-Hg-Sn)

Question 33

Charles law states that Gas varies proportional to the _____ when pressure is constant.

Answer 33

Absolute temperature

Question 34

Examples of amorphous solid

Answer 34

Glass, Plastic

Question 35

Which state of matter is virtually incompressible

Answer 35

Solid

Question 36

Average kinetic energy depends proportional to ____

Answer 36

Absolute temperature