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Short Answer Questions,
1. Define the following terms.
a. Corrosion
b. Metallurgy
c. Displacement reaction d. Sonority
2. Why are sodium and potassium stored in
kerosene oil?
3. Name a metal and a non-metal that exist in
liquid state at room temperature
Answers
Answer:
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Explanation:
1.a)Corrosion is when a refined metal is naturally converted to a more stable form such as its oxide, hydroxide or sulphide state this leads to deterioration of the material
b)Metallurgy is defined as a process that is used for the extraction of metals in their pure form. The compounds of metals mixed with soil, limestone, sand, and rocks are known as minerals. ... These minerals are known as ores.
c)Displacement reaction is a chemical reaction in which a more reactive element displaces a less reactive element from its compound. Both metals and non-metals take part in displacement reactions. Example : Reaction of iron nails with copper sulphate solution.
d)sonorosity is the ringing sound of some metals produced when they hits any other metal.
2)Sodium and Potassium are highly reactive metals and react vigorously with the oxygen, carbon dioxide and moisture present in the air such that it may even cause a fire. To prevent this explosive reaction,
3)The metal which exist as a liquid at room temperature is mercury. Non-metal which exist as a liquid at room temperature is bromine.
Answer:
corrosion is the irreversible damage or destruction of living tissue or material due to a chemical or electrochemical reaction
Metallurgy is a domain of material science and engineering that studies the physical and chemical behavior of metallic elements, their inter-metallic compounds, and their mixtures, which are called alloys.
Ans2. Sodium and Potassium are highly reactive metals and react vigorously with the oxygen, carbon dioxide and moisture present in the air such that it may even cause a fire. To prevent this explosive reaction, Sodium is kept immersed in kerosene because Sodium doesn't react with kerosene.
Ans3. Bromine