I need to collect information and to write a full description for the following components related to “Gelatin” topic :

Its Abstract, its Chemical structure and properties, its common uses, and its mechanical properties

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What is derivatization: 

◯ a. Transformation of a chemical compound into one of similar physical structure, but with equal physical properties. 

◯ b. Transformation of a chemical compound into one of similar chemical structure, but with different chemical properties. 

◯ c. Transformation of a chemical compound into one of similar chemical structure, but with equal chemical properties 

◯ d. Transformation of a chemical compound into one of equal chemical structure, but with different chemical properties

◯ e. none of the above

Using the resultant equation: Y= 0.0027X + 0.0015 and given Y=0.1526 (for), the concentration of (ppm) is:

◯ a. 4.64

◯ b. 2.36

◯ c. 56.0 

◯  d. 23.4 

◯ e. 13.87

Conformational isomers (conformations):

(a) Read the following description of the element zinc and indicate which are physical properties and which are chemical properties.

Zinc melts at 420 °C. When zinc granules are added to dilute sulfuric acid, hydrogen is given off and the metal dissolves. Zinc has a hardness on the Mohs scale of 2.5 and a density of 7.13g/cm³ at 25 °C. It reacts slowly with oxygen gas at elevated temperatures to form zinc oxide, ZnO.

(b) Which properties of zinc can you describe from the photo? Are these physical or chemical properties?