ICSE ICSE Class 8 - CISCE Question Bank Solutions for Chemistry

Balance the following equation. Also name the products formed.

`PbCO _3   →  PbO +CO_2`   

Balance the following equation. Also name the products formed.

`FeCI_2 + CI_2  →  Fe CI_3`

Name the type of chemical reaction shown by the following equation.

NaOH + HCI → NaCI + H₂O

Name the type of chemical reaction shown by the following equation:

Fe₂O₃ + 2Al → Al₂O₃ + 2Fe

Write your observations and name the product when
 Zinc reacts with dilute hydrochloric acid.

Write balanced chemical equation for the following word equation:

Magnesium + dil. sulphuric acid → Magnesium sulphate + hydrogen

What is the chemical equation. How is it represented?

Differentiate between a ‘word equation’ and a ‘molecular equation’ with a suitable example.

State the information provided by a chemical equation.

Chemical equations suffer from a number of limitations. State the main limitations of a chemical equation.

State what is a balanced equation with a relevant example. Give a reason why an equation is balanced with reference to the law of conservation of matter.

Write a balanced molecular equation for the following word equation:

\[\ce{Calcium + oxygen->Calcium oxide}\]

Write a balanced molecular equation for the following word equation:

\[\ce{Calcium + water->Calcium hydroxide + hydrogen}\]

Write a balanced molecular equation for the following word equation:

\[\ce{Zinc + sulphuric acid->Zinc sulphate + hydrogen}\]

Write a balanced molecular equation for the following word equation:

\[\ce{Lead sulphate + ammonium hydroxide->Ammonium sulphate + lead hydroxide}\]

Write a balanced molecular equation for the following word equation:

\[\ce{Copper hydroxide + nitric acid->Copper nitrate + water}\]

Write a balanced molecular equation for the following word equation:

\[\ce{Lead nitrate + sodium chloride->Sodium nitrate + lead chloride}\]

Balance the following equation:

\[\ce{P + O2->P2O5}\]

Balance the following equation:

\[\ce{K + H2O->KOH + H2}\]

Balance the following equation:

\[\ce{Na2O + H2O->NaOH}\]