Module 2

Question 1

is the study of compounds that contain carbon

Answer 1

Organic Chemistry

Question 2

first known organic compounds were derived from ___________ and were
difficult to crystallize and purify

Answer 2

animals and vegetable sources

Question 3

In 1770, the Swedish chemist, ________ was the first person to express the difference of
organic and inorganic substances

Answer 3

Torbern Bergman

Question 4

Early chemists thought there were two classes of compounds

Answer 4

organic compounds
inorganic compounds

Question 5

• compounds produced by living organisms

Answer 5

organic compounds

Question 6

• compounds found in minerals or rocks

Answer 6

inorganic compounds

Question 7

only explanation to the difference between organic and inorganic compounds
contain undefinable ___________ as a result of the derivation from the living sources.

Answer 7

“ vital force “

Question 8

He heated an aqueous solution of two inorganic compounds, ammonium chloride and silver cyanate and he obtained urea.

Answer 8

Friedrich Wohler

Question 9

According to Friedrich Wohler,Organic compounds are those containing ________

Answer 9

carbon

Question 10

The chemistry of living organisms is no longer called organic chemistry but it is called

Answer 10

Biochemistry

Question 11

What is in carbon that permits the formation of so many compounds?

Answer 11

1. carbon atoms form stable bonds with other carbon atoms
2. carbon atoms also form stable bonds with other atoms including hydrogen, oxygen, nitrogen,
   halogens and sulfur
3. carbon atoms form four bonds, and these can be made up in many ways, so that many
   combinations and arrangements of atoms are possible

Question 12

There are two principal ways of obtaining new organic compounds

Answer 12

1. isolation from nature
2. synthesis

Question 13

One way to get organic compounds is by extraction from a biological source - biosynthesis

Answer 13

Isolation from Nature

Question 14

Compounds made by chemist in the laboratory but identical to those in nature

Answer 14

Synthesis

Question 15

• what holds atoms together which is a powerful attraction between elements

Answer 15

Chemical bonds

Question 16

covalent chemical bonds in ________
Covalent bond is the sharing of electrons

Answer 16

organic compounds

Question 17

ionic chemical bonds in ___________
Ionic bond or electrovalent bond is the attraction between positive and negative ions

Answer 17

inorganic compounds