ICSE ICSE Class 7 - CISCE Question Bank Solutions

Write word equation for the following skeletal equation:

\[\ce{NaOH + H2SO4 -> Na2SO4 + H2O}\]

Write word equation for the following skeletal equation:

\[\ce{AgBr -> Ag + Br2}\]

Write word equation for the following skeletal equation:

\[\ce{KNO3 -> KNO2 + O2}\]

Fill in the blank.

Water is a matter because it has mass and occupies _______

Balance the following chemical equation :

FeS + HCl →  FeCl₂ + H₂S

Balance the following chemical equation :

Na₂CO₃ + HCl  →  NaCI + H₂O + CO₂

Balance the following chemical equation :

H₂ + O₂   →  H₂O

Balance the following chemical equation :

Na₂0 + H₂0  →  NaOH

Fill in the blank

The molecules are at a greater distance in ______ compared to liquids.

Fill in the blank

The physical state of a substance, which has a fixed volume but no fixed shape is _______

What information do you get from the equation H₂+ Cl₂  →  2HCl ?

Write your observation for the following chemical reaction and name the product formed:

When sugar is heated.

Fill in the blank

Molecules in a ________ are packed very closely.

Write your observation for the following chemical reaction and name the product formed :

When manganese dioxide is added to potassium chlorate and heated.

Fill in the blank

When a gas is cooled, its molecules ________ energy,

Write your observation for the following chemical reaction and name the product formed :

When dilute acetic acid is poured on baking soda.

Write your observation for the following chemical reaction and name the product formed :

When an aqueous solution of sodium chloride is mixed with an aqueous solution of silver nitrate.

Fill in the blank 

Matter is anything that has ______ and occupies ______

Write your observation for the following chemical reaction and name the product formed :
When ammonium chloride is heated with sodium hydroxide.

Write your observation for the following chemical reaction and name the product formed :

When water is added to quick lime?