HARD
7th ICSE
IMPORTANT
Earn 100

Give an example of a reaction in which the change in colour is observed. Also, write the word and chemical equation for it.

Important Questions on The Language of Chemistry

HARD
7th ICSE
IMPORTANT
Inspired Chemistry-7>Chapter 5 - The Language of Chemistry>CHECKPOINT>Q 2

Give an example of a reaction in which formation of a precipitate is observed. Also, write the word and chemical equation for it.

HARD
7th ICSE
IMPORTANT
Inspired Chemistry-7>Chapter 5 - The Language of Chemistry>CHECKPOINT>Q 2

Give an example of a reaction in which evolution of gas is observed. Also, write the word and chemical equation for it.

HARD
7th ICSE
IMPORTANT
Inspired Chemistry-7>Chapter 5 - The Language of Chemistry>CHECKPOINT>Q 3
Explain the difference between endothermic and exothermic reactions. Give examples.
MEDIUM
7th ICSE
IMPORTANT
Inspired Chemistry-7>Chapter 5 - The Language of Chemistry>CHECKPOINT>Q 4
What are the conditions for a chemical reaction to take place? 
HARD
7th ICSE
IMPORTANT
Inspired Chemistry-7>Chapter 5 - The Language of Chemistry>Think and Answer>Q 1
When milk is boiled, bubbles are formed. When milk is set to form curd and left outside for a few days, bubbles are formed again. In which of these cases has a chemical reaction taken place? How can you say?