ICSE ICSE Class 7 - CISCE Question Bank Solutions for Chemistry

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?

Write whether the following statement are true or false.

 Solids have the largest inter-molecular space.

Write symbolic representation for the following word equation and balance them :

Calcium carbonate → Calcium oxide + Carbon dioxide.

Write symbolic representation for the following word equation and balance them :

 Carbon + Oxygen → Carbon dioxide.

Write whether the following statement are true or false.

The intermolecular force of attraction is the weakest in gases.

Write whether the following statement are true or false.

Intermolecular force of attraction is greater in gases than in liquids.