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
How 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 Solution$1 \, kg \, m^{-3} = \dots \, g \, cm^{-3}$
Easy
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 SolutionWhich of the following have the same number of significant figures?
$(A)$ $0.00253$
$(B)$ $1.0003$
$(C)$ $15.0$
$(D)$ $163$
Choose the correct answer from the options given below:
$(A)$ $0.00253$
$(B)$ $1.0003$
$(C)$ $15.0$
$(D)$ $163$
Choose the correct answer from the options given below:
DifficultJEE MAIN 2023
View SolutionThe candela is the luminous intensity,in a given direction,of a source that emits monochromatic radiation of frequency '$A$' $\times 10^{12}$ hertz and that has a radiant intensity in that direction of $\frac{1}{B}$ watt per steradian. '$A$' and '$B$' are respectively
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