MEDIUM
8th ICSE
IMPORTANT
Earn 100

Why are atoms called building blocks of matter?

Important Questions on Atomic Structure

EASY
8th ICSE
IMPORTANT
Its All About Science - Chemistry>Chapter 4 - Atomic Structure>Check Point>Q A
Name the philosophers who have attempted to give model of an atom.
MEDIUM
8th ICSE
IMPORTANT
Its All About Science - Chemistry>Chapter 4 - Atomic Structure>Check Point>Q A
Describe the main postulates of the Dalton's atomic theory.
EASY
8th ICSE
IMPORTANT
Its All About Science - Chemistry>Chapter 4 - Atomic Structure>Check Point>Q B
What do you understand by the terms atomic number and mass number of the elements?
MEDIUM
8th ICSE
IMPORTANT
Its All About Science - Chemistry>Chapter 4 - Atomic Structure>Check Point>Q B
Atomic number of an element is 8. What does it tell about the element from this?
MEDIUM
8th ICSE
IMPORTANT
Its All About Science - Chemistry>Chapter 4 - Atomic Structure>Check Point>Q B
The atomic number of an element is 92 and the mass number is 238. Calculate the number of subatomic particles of the atom.
EASY
8th ICSE
IMPORTANT
Its All About Science - Chemistry>Chapter 4 - Atomic Structure>Check Point>Q A
Removal or addition of electrons into the atom leads to the formation of ions.
EASY
8th ICSE
IMPORTANT
Its All About Science - Chemistry>Chapter 4 - Atomic Structure>Check Point>Q A
Loss of electrons in atom gives rise to negative ions.
MEDIUM
8th ICSE
IMPORTANT
Its All About Science - Chemistry>Chapter 4 - Atomic Structure>Check Point>Q A
Positive and negative ions combine to form ionic compounds.