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Underline the incorrectly balanced compound equation and rewrite the correct equation.
\[\ce{Fe2O3 + 2H2->2Fe + 3H2O}\]
Concept: undefined >> undefined
Underline the incorrectly balanced compound equation and rewrite the correct equation.
\[\ce{2Al + 2H2SO4->Al2(SO4)3 + 3H2}\]
Concept: undefined >> undefined
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Underline the incorrectly balanced compound equation and rewrite the correct equation.
\[\ce{N2 + 3H2⇌NH3}\]
Concept: undefined >> undefined
Underline the incorrectly balanced compound equation and rewrite the correct equation.
\[\ce{ZnO + 3NaOH->Na2ZnO2 + H2O}\]\
Concept: undefined >> undefined
Underline the incorrectly balanced compound equation and rewrite the correct equation.
\[\ce{FeCl3 + 3NH4OH->2NH4Cl + Fe(OH)3}\]
Concept: undefined >> undefined
Underline the incorrectly balanced compound equation and rewrite the correct equation.
\[\ce{FeS + 2HCl + 2FeCl2 + H2S}\]
Concept: undefined >> undefined
Underline the incorrectly balanced compound equation and rewrite the correct equation.
\[\ce{3NH3 + H2SO4->(NH4)2SO4}\]
Concept: undefined >> undefined
Underline the incorrectly balanced compound equation and rewrite the correct equation.
\[\ce{PbO2 + 4HCl->PbCl2 + H2O + Cl2}\]
Concept: undefined >> undefined
Dalton said that ______ could not be divided.
Concept: undefined >> undefined
Fill in the blank
An ion which has a positive charge is called a ..................
Concept: undefined >> undefined
Fill in the blanks.
Isotopes are the atoms of ______ element having the ______ atomic number but ______ mass number.
Concept: undefined >> undefined
Write true or false for the following statement
An atom on the whole has a positive charge.
Concept: undefined >> undefined
Give the following a suitable word/phrase.
Atoms of same element with same atomic number but a different mass number.
Concept: undefined >> undefined
Multiple Choice Questions
The sub atomic particle with negative charge is
Concept: undefined >> undefined
Multiple Choice Questions
If the atomic number of an atom is 17 and mass number is 35 then number of neutron will be
Concept: undefined >> undefined
Multiple Choice Questions
The sum of number of protons and number of neutrons present in the nucleus of an atom is called its
Concept: undefined >> undefined
What are the two main features of Rutherford’s atomic model?
Concept: undefined >> undefined
State the mass number, the atomic number, number of neutrons and electronic configuration of the following atoms.
`""^12""_6C, ""^16""_8O, ""^19""_9F, ""^20""_10Ne, ""_13""Al""^27, ""_17""Cl""^35`
Also, draw atomic diagrams for them.
Concept: undefined >> undefined
What is variable valency? Name two elements having variable valency and state their valencies.
Concept: undefined >> undefined
The atomic number and the mass number of sodium are 11 and 23 respectively. What information is conveyed by this statement.
Concept: undefined >> undefined
