Difficult
Define Mass and Weight.
(N/A) Mass of a substance is the amount of matter present in it,while weight is the force exerted by gravity on an object.
The mass of a substance is constant,whereas its weight may vary from one place to another due to the change in gravity.
The mass of a substance can be determined very accurately in the laboratory by using an analytical balance.
The $SI$ unit of mass is kilogram $(kg)$. Its fraction,gram $(1 \ kg = 1000 \ g)$,is used in laboratories due to the smaller amounts of chemicals used in chemical reactions.
Volume has the units of $(\text{length})^3$. So in the $SI$ system,volume has units of $m^3$. However,in chemistry laboratories,smaller volumes are used. Hence,volume is often denoted in $cm^3$ or $dm^3$ units. $A$ common unit,litre $(L)$,which is not an $SI$ unit,is used for the measurement of the volume of liquids. $1 \ L = 1000 \ mL$,$1000 \ cm^3 = 1 \ dm^3$.
The mass of a substance is constant,whereas its weight may vary from one place to another due to the change in gravity.
The mass of a substance can be determined very accurately in the laboratory by using an analytical balance.
The $SI$ unit of mass is kilogram $(kg)$. Its fraction,gram $(1 \ kg = 1000 \ g)$,is used in laboratories due to the smaller amounts of chemicals used in chemical reactions.
Volume has the units of $(\text{length})^3$. So in the $SI$ system,volume has units of $m^3$. However,in chemistry laboratories,smaller volumes are used. Hence,volume is often denoted in $cm^3$ or $dm^3$ units. $A$ common unit,litre $(L)$,which is not an $SI$ unit,is used for the measurement of the volume of liquids. $1 \ L = 1000 \ mL$,$1000 \ cm^3 = 1 \ dm^3$.
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Similar Questions
Fill in the blanks given below:
$(i)$ At ........ ${\,^\circ }{\text{C}}$,the values of temperature in both ${\,^\circ }{\text{C}}$ and ${\,^\circ }{\text{F}}$ are equal.
$(ii)$ The number of significant figures in $0.03$ is .....
$(iii)$ The closeness of various measurements for the same quantity is called .........
$(iv)$ The agreement of a particular value to the true value of the result is called ....
$(i)$ At ........ ${\,^\circ }{\text{C}}$,the values of temperature in both ${\,^\circ }{\text{C}}$ and ${\,^\circ }{\text{F}}$ are equal.
$(ii)$ The number of significant figures in $0.03$ is .....
$(iii)$ The closeness of various measurements for the same quantity is called .........
$(iv)$ The agreement of a particular value to the true value of the result is called ....
Medium
View SolutionChoose the correct statements.
$A$. Weight of a substance is the amount of matter present in it.
$B$. Mass is the force exerted by gravity on an object.
$C$. Volume is the amount of space occupied by a substance.
$D$. Temperatures below $0^{\circ} C$ are possible in Celsius scale,but in Kelvin scale negative temperature is not possible.
$E$. Precision refers to the closeness of various measurements for the same quantity.
$A$. Weight of a substance is the amount of matter present in it.
$B$. Mass is the force exerted by gravity on an object.
$C$. Volume is the amount of space occupied by a substance.
$D$. Temperatures below $0^{\circ} C$ are possible in Celsius scale,but in Kelvin scale negative temperature is not possible.
$E$. Precision refers to the closeness of various measurements for the same quantity.
DifficultJEE MAIN 2025
View Solution$0.1 \, mol \, L^{-1}$ means how much $mol \, m^{-3}$ and how much $mol \, cm^{-3}$?
Medium
View SolutionHow many significant figures are present in the following?
$(i)$ $0.0025$
$(ii)$ $208$
$(iii)$ $5005$
$(iv)$ $126.000$
$(v)$ $500.0$
$(vi)$ $2.0034$
$(i)$ $0.0025$
$(ii)$ $208$
$(iii)$ $5005$
$(iv)$ $126.000$
$(v)$ $500.0$
$(vi)$ $2.0034$
Medium
View SolutionThe number of significant figures in $0.00340$ is $......$
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