Read the passage & answers the Questions below
A molecule is in general a group of two or more atoms that are bonded together by attractive forces.A
molecule can be defined as the smallest particle of an element or a compound that is capable of
independent existence and shows all properties of that substance.
Q1.Differentiate between molecule of an element & molecule of compound.
Q2.Give example of both.(one each)
Q3.Why atoms combine to form molecule?
Multiple choice questions
Q4.Correct symbol of Magnesium is: mg,Mn ,Ma ,Mg
Q5. Technique used for purification of copper sulphate is :
Evaporation, hydration , sublimation , crystallization
Q6.Match the column(
Column I Column II
a)Sulphur. Monoatomic
b) Sodium. Valency of 2
c) He polyatomic
c) Calcium. Metal
Q7.Give two examples of elements symboliz by their Latin name.
TWO MARKS QUESTIONS:
Q8. Define solubility.What is the effect of temperature on solubility., explain with
example.
Q9. Name the elements present in :
Aluminium oxide and Barium chloride.
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Answer:
BbBhHahahnannahdgdhhdjd
Explanation:
y+2-3