EASY
6th ICSE
IMPORTANT
Earn 100

State whether the following statement is true or false. Rewrite the false statement correctly.

When two or more atoms of the same element combine, they form a molecule of an element.

Important Questions on Elements and Compounds

MEDIUM
6th ICSE
IMPORTANT
Exploring Chemistry-6>Chapter 3 - Elements and Compounds>Exercise For Revision>Q 4

State whether the following statement is true or false. Rewrite the false statement correctly.

When atoms of two or more elements combine chemically, they form a molecule of a compound.

MEDIUM
6th ICSE
IMPORTANT
Exploring Chemistry-6>Chapter 3 - Elements and Compounds>Exercise For Revision>Q 1
Which of the following is the short way of representing a molecule of an element or a compound?
MEDIUM
6th ICSE
IMPORTANT
Exploring Chemistry-6>Chapter 3 - Elements and Compounds>Exercise For Revision>Q 2
The formula of a molecule of oxygen is
MEDIUM
6th ICSE
IMPORTANT
Exploring Chemistry-6>Chapter 3 - Elements and Compounds>Exercise For Revision>Q 3
The valency of an element is always
EASY
6th ICSE
IMPORTANT
Exploring Chemistry-6>Chapter 3 - Elements and Compounds>Exercise For Revision>Q 4
The valency of an inert gas is
MEDIUM
6th ICSE
IMPORTANT
Exploring Chemistry-6>Chapter 3 - Elements and Compounds>Exercise For Revision>Q 5
Which of the following information do we not get from the chemical formula of a compound?
HARD
6th ICSE
IMPORTANT
Exploring Chemistry-6>Chapter 3 - Elements and Compounds>Exercise For Revision>Q 1

Complete the table given below:

S.No. Compounds Formula Elements present
1. Water    
2. Common salt    
3. Ammonia    
4. Vinegar    
5. Hydrochloric acid    
6. Sulphuric acid    
7. Nitric acid    
8. Sodium hydroxide    
9. Calcium hydroxide    
MEDIUM
6th ICSE
IMPORTANT
Exploring Chemistry-6>Chapter 3 - Elements and Compounds>EXERCISE>Q 1
Define metalloids, noble gases and atomicity.