Complete the following crossword puzzle by using the names of the chemical elements based on the data provided in the table.
Across Down $2$. The element used by Rutherford during his $\alpha$-scattering experiment. $1$. $A$ white lustrous metal used for making ornaments and which tends to get tarnished black in the presence of moist air. $3$. An element which forms rust on exposure to moist air. $4$. Both brass and bronze are alloys of this element. $5$. $A$ very reactive non-metal stored under water. $6$. The metal which exists in the liquid state at room temperature. $7$. Zinc metal when treated with dilute hydrochloric acid produces a gas of this element which when tested with a burning splinter produces a pop sound. $8$. An element with the symbol $Pb$.
| Across | Down |
|---|---|
| $2$. The element used by Rutherford during his $\alpha$-scattering experiment. | $1$. $A$ white lustrous metal used for making ornaments and which tends to get tarnished black in the presence of moist air. |
| $3$. An element which forms rust on exposure to moist air. | $4$. Both brass and bronze are alloys of this element. |
| $5$. $A$ very reactive non-metal stored under water. | $6$. The metal which exists in the liquid state at room temperature. |
| $7$. Zinc metal when treated with dilute hydrochloric acid produces a gas of this element which when tested with a burning splinter produces a pop sound. | $8$. An element with the symbol $Pb$. |
(N/A) The completed crossword puzzle corresponds to the following elements:
$(1)$ Silver
$(2)$ Gold
$(3)$ Iron
$(4)$ Copper
$(5)$ Phosphorus
$(6)$ Mercury
$(7)$ Hydrogen
$(8)$ Lead
$(1)$ Silver
$(2)$ Gold
$(3)$ Iron
$(4)$ Copper
$(5)$ Phosphorus
$(6)$ Mercury
$(7)$ Hydrogen
$(8)$ Lead
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Similar Questions
$(a)$ Calculate the mass of $0.5$ mole of oxygen atoms.
$(b)$ Calculate the number of molecules of glucose present in its $90 \ g$ (molecular mass of glucose is $180 \ u$). (Avogadro constant $= 6.022 \times 10^{23} \ mol^{-1}$)
$(c)$ Calculate the number of moles of water in $2 \ g$ of water.
(Atomic mass of $H = 1 \ u, O = 16 \ u$)
$(b)$ Calculate the number of molecules of glucose present in its $90 \ g$ (molecular mass of glucose is $180 \ u$). (Avogadro constant $= 6.022 \times 10^{23} \ mol^{-1}$)
$(c)$ Calculate the number of moles of water in $2 \ g$ of water.
(Atomic mass of $H = 1 \ u, O = 16 \ u$)
Medium
View Solution$(i)$ $(a)$ What do you understand by $1 \text{ amu}$ or $1 \text{ u}$?
$(b)$ How is it linked with relative atomic mass?
$(ii)$ How do we know the presence of atoms if they do not exist independently for most of the elements?
$(b)$ How is it linked with relative atomic mass?
$(ii)$ How do we know the presence of atoms if they do not exist independently for most of the elements?
Medium
View SolutionVerify by calculating that:
$(a)$ $5$ moles of $CO_2$ has a higher mass than $5$ moles of $H_2O$.
$(b)$ $120 \, g$ of calcium and $120 \, g$ of magnesium elements have a mole ratio of $3:5$.
$(a)$ $5$ moles of $CO_2$ has a higher mass than $5$ moles of $H_2O$.
$(b)$ $120 \, g$ of calcium and $120 \, g$ of magnesium elements have a mole ratio of $3:5$.
Medium
View SolutionFill in the missing data in the Table.
Species property $H_2O$ $CO_2$ $Na$ atom $MgCl_2$ No. of moles $2$ - - $0.5$ No. of particles - $3.011 \times 10^{23}$ - - Mass $36 \, g$ - $115 \, g$ -
| Species property | $H_2O$ | $CO_2$ | $Na$ atom | $MgCl_2$ |
| No. of moles | $2$ | - | - | $0.5$ |
| No. of particles | - | $3.011 \times 10^{23}$ | - | - |
| Mass | $36 \, g$ | - | $115 \, g$ | - |
Medium
View SolutionCalculate the number of molecules in $0.5$ mole of water.
Easy
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