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1. Define or explain the following terms:
a. Science
b. Experimentation
c. Scientific method
d. Hypothesis
e. Theory
f. Scientific law
g. Chemistry
h. Organic chemistry
i. Inorganic chemistry
j. Analytical chemistry
k. Physical chemistry
l. biochemistry
2. Distinguish between
a. Hypothesis and theory
b. Theory and law
c. Inorganic and organic chemistry
d. Qualitative and quantitative analysis
3. Read from the magazines, newspaper, clippings, news watch and other sources about the latest in the following topics in science. Give at least five (5) of each.
a. Discoveries
b. Technological advancement
c. Breakthroughs
Nitrite rubbers (Gr-A or Buna-N or NBR): Nitrite rubber is prepared by the copolymerization of butadiene and acrylonitrile in emulsion systems. Properties: 1.
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Post-harvest treatments Certain post-harvest treatments to fruits and vegetables can bring down spoilage significantly. A wide range of chemicals used to control post-harvest d
Name the principal ore of tin or lead. Describe the different steps (along with equationsfor the reactions) involved in the extraction of the metal from the ore named. Name
DNA nucleotides Adenine + Deoxy ribose sugar + Phosphate → Adenosine phosphate Guanine
why lanthanides and actinides are known as inner transition elements
Amongst the following covalent bonding is found in: (1) Sodium chloride (2) Magnesium chloride (3) Water (4) Brass Ans: Water
Why transition elements form interstitial compound
The free energy change for the formation of oxide of aluminium is highly negative ( -1000 to -1100) so , it can easily reduce any metal oxide abve it easily in ellingham diamgram a
what is the chemistry behind the reactions of confirmatory test of sulphide radical of dilute acid group.
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