(A) molecule is defined as the smallest particle of an element or a compound that is capable of an independent existence and exhibits all the properti

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(A) molecule is defined as the smallest particle of an element or a compound that is capable of an independent existence and exhibits all the properties of that substance.It consists of two or more atoms that are chemically bonded together.These atoms can be of the same element (e.g.,$O_2$) or different elements (e.g.,$H_2O$).Therefore,all the given statements correctly describe a molecule.

Class 9 Science ATOMS AND MOLECULES Mix Example - ATOMS AND MOLECULES

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$A$ molecule can be defined as the

A
All of these are correct.
B
$A$ group of two or more atoms that are chemically bonded together.
C
$A$ smallest particle of an element or a compound that is capable of an independent existence and shows all the properties of that substance.
D
Substance which is formed by the combination of atoms of the same element or of different elements.

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ATOMS AND MOLECULES

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Mix Example - ATOMS AND MOLECULES

Calculate the number of moles of magnesium present in a magnesium ribbon weighing $12 \, g$. The molar atomic mass of magnesium is $24 \, g \, mol^{-1}$. (in $, mol$)

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$(a)$ State the law of conservation of mass.
$(b)$ What mass of silver nitrate will react with $5.85 \, g$ of sodium chloride to produce $14.35 \, g$ of silver chloride and $8.5 \, g$ of sodium nitrate,if the law of conservation of mass is true?

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$(a)$ In this crossword puzzle (Fig),names of $11$ elements are hidden. Symbols of these are given below. Complete the puzzle.
$1. Cl$
$2. H$
$3. Ar$
$4. O$
$5. Xe$
$6. N$
$7. He$
$8. F$
$9. Kr$
$10. Rn$
$11. Ne$
$(b)$ Identify the total number of inert gases,their names,and symbols from this crossword puzzle.

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The atomic numbers of three elements $A, B$ and $C$ are $9, 10$ and $13$ respectively. Which of them will form a cation?

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$A$ change in the physical state of matter can be brought about:

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$A$ molecule can be defined as the

Similar Questions

Calculate the number of moles of magnesium present in a magnesium ribbon weighing $12 \, g$. The molar atomic mass of magnesium is $24 \, g \, mol^{-1}$. (in $, mol$)

$(a)$ State the law of conservation of mass.$(b)$ What mass of silver nitrate will react with $5.85 \, g$ of sodium chloride to produce $14.35 \, g$ of silver chloride and $8.5 \, g$ of sodium nitrate,if the law of conservation of mass is true?

The atomic numbers of three elements $A, B$ and $C$ are $9, 10$ and $13$ respectively. Which of them will form a cation?

$A$ change in the physical state of matter can be brought about:

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$(a)$ State the law of conservation of mass.
$(b)$ What mass of silver nitrate will react with $5.85 \, g$ of sodium chloride to produce $14.35 \, g$ of silver chloride and $8.5 \, g$ of sodium nitrate,if the law of conservation of mass is true?