7/18/2019 Fundamentals of Chemistry

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Chemistry (9) Unit # 1 Fundamentals of Chemistry

By: - Muhammad AbuBakar Mughal (mughal909@hotmail.com) 1

1.   What is chemistry?

2.  How science and technology has developed our lives?

3.  

Write down some names of major branches of chemistry>?

4.  

Define following termsa.

 

Physical chemistry

b. 

Organic chemistry

c. 

Inorganic chemistry

d. 

Biochemistry

e. 

Industrial chemistry

 f. 

Nuclear chemistry 

g. 

Environmental chemistry

h. 

Analytical chemistry

5.  

What is quantitative analysis as well as qualitative analysis?

6.  

What is matter?7.  

What is the difference between substance and mixture?

8.  Define physical and chemical properties/

9.  Describe the firstly discovered nine elements?

10.  

Write names of liquid solid gaseous elements?

11.  

How much percentage of elements are metals?

12.  

How we can represent elements?

13.  

What is valancy?

14.  

Define valancy for covalent compound as well as for ionic compound?

15.  

What elements prefer to loss their electrons to complete their octet?

16.  

What elements prefer to gain electrons to complete their octet?17. 

 

Define radical?

18.  

Can an element have variable valancy if yes describe how?

19.  

Define compound?

20.  

How we represent compound?

21.  

For what purpose molecular formulae is used?

22.  

What are mixtures?

23.  

Can we separate mixed elements in mixture if yes how?

24.  

Differentiate between homogeneous and heterogeneous mixture?

25.  

Write some differences between compound and mixtures?

26.  

What is atomic number?

27.  

Define mass number?

28.  

How we can find number of neutrons inside nucleus of elements?

29.  

Describe your ideas of relative atomic mass?

30.  

Describe some features to write down chemical formulae?(long Question)

31.  

Define empirical formulae and give an example?

32.   What is formula unit?

7/18/2019 Fundamentals of Chemistry

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Chemistry (9) Unit # 1 Fundamentals of Chemistry

By: - Muhammad AbuBakar Mughal (mughal909@hotmail.com) 2

33.  

What is molecular formula; define its relationship with empirical formula?

34.  

What are molecular mass and its difference with formulae mass?

35.  

What are cation and anions, give example?

36.   Difference between atoms and ions?

37.   What are molecular ions?

38.  

How we can differentiate molecule and molecular ion?

39.  

What are free radicals?

40.  

Define plasma?

41.  

What are types of molecule define

a. 

Mono atomic

b. 

Diatomic

c. 

Tri atomic

d. 

Poly atomic

42.  

What are homo atomic molecules and hetero atomic molecules?

43.  

What is gram atomic mass?

44.  

What is gram molecular mass?

45.  

Define gram formulae mass?

46.   What are Avogadro’s number and what they are called?  

47.  

One molecule of water contains how much particles?

48.   Define mole briefly?

49.   How we can calculate number of moles when mass of a substance is given?

50.  

How we can calculate the number of particles if we have number of moles?

51.  

How we can calculate mass of substance from number of moles?

52.  

If we are given number of particle show we can calculate number of moles?