Question

Write three physical properties
andchemical properties of metals ?
(a) Write three methods to prevent rusting .
(b) Explain (1) Rancidity (2) Oxidation .

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Answer 1

Answer:

• Melting and boiling points - High melting point and boiling point Exception being gallium and caesium
• Malleability and Ductility- malleable and ductile
• Conductivity- Conducts heat and electricity
• Lustre- Shining lustre

(a) - any three methods to prevent rusting :

• Prevent Scratches. ...
• Apply A Protective Coating. ...
• Use Stainless Steel. ...
• Use Galvanized Metal. ...
• Regular Maintenance.

(b) 1 -Rancidity is a very general term and in its most general meaning, it refers to the spoilage of a food in such a way that it becomes undesirable (and usually unsafe) for consumption. When people say that a food has "gone bad," what they're usually talking about is rancidity.

2- Redox is a type of chemical reaction in which the oxidation states of atoms are changed. Redox reactions are characterized by the actual or formal transfer of electrons between chemical species, most often with one species undergoing oxidation while another species undergoes reduction.

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