Chapter 4

Question 1

Organic chemistry

Answer 1

Compound containing carbon are called organic and their chemistry is known as organic chemistry

Question 2

Where does organic compounds exist

Answer 2

We’re once thought to arise only within living organisms but now can be synthesised in labs.

Question 3

Characteristics of carbon atom

Answer 3

• has valance of 4
• can bond with various other atoms including O,H and N. Carbon also bonds to other carbon atom, forming the carbon skeleton of oraganic comping

Question 4

Hydrocarbon

Answer 4

Consist of hydrogen and oxygen only

Question 5

Isomer

Answer 5

Compound that have same molecular formula but different structure and therefore different properties

Question 6

What different type of isomers

Answer 6

• structural isomer
• CIS-trans isomer(geometric isomers)
• enantiomers(mirror image isomers)

Question 7

Which chemical group reacts in organic chemistry

Answer 7

Chemical group attached to carbon skeleton of organic molecules participate in chemical reaction (functional group)

Question 8

ATP(adenosine triphosphate)

Answer 8

Consist of adenosine attached to three phosphate groups. ATP can react with water forming inorganic phosphate and ADP(adenosine diphosphate). This reaction releases end
Energy that can be used by cell

Question 9

List dome chemical groups

Answer 9

-hydroxyl (-OH)
-Carbonyl (>C=0)
Carboxyl (>c=ooh
-amino acid (-N