1. Write the Alchemists symbols and Daltons symbols for Silver, Gold and Copper.
02. What are the steps for writing the formula for aluminium sulphate.
Q3. What is atomicity? Give the examples of Monoatomic, Diatomic and tetra atomic element
04. How you will represent the elements? Write the symbol of elements based on Latin names?
Q5. Differentiate between Mixture and Compound (Three points)
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Answers
Answer:
Ans 3 - Atomicity is number of atoms in molecule of element.
Monoatomic element = all inert gases like helium
diatomic elements = oxygen ,hydrogen
tetraatomic elements = phosphorus
Ans 4 - Element are given the letter symbols to represent and recognize then easily. The symbols are mostly represented by first letter or first two letters . the elements based on latin names are -
Iron Fe Ferrum
gold Au Aurum
copper cu cuprum
lead pb Plumbum
Ans 5- Mixture = point a ) A mixture can be made by mixing two or more elements or compound in any ratio .
point b) constituents can be seperated by physical method .
point c) the properties are same of their constituents.
compound = point a) A compound is always made up of elements combined in fixed ratio that remains same
point b) Constituents can only be separated by chemical method .
point c) they have properties different form those of their constituents.
Answer:
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