ICSE Worksheet for Chapter - 2 Atoms and Molecules Class 8

ICSE Worksheet for Chapter - 2 Atoms and Molecules Class 8

Worksheets For class 8

Find ICSE Worksheet for chapter-2 Atoms and Molecules class 8

1. CLASS-8
2. BOARD: ICSE
3. Chemistry Worksheet - 2
4. TOPIC: Atoms and Molecules
5. For other ICSE Worksheet for class 8 Science check out main page of Physics Wallah.

SUMMARY -

• Dalton’s atomic theory.
• Basic structure of atom, atomic number and mass number.
• Electronic configuration, relative atomic / molecular mass.
• Isotopes, isobars, isotones.
• Electrovalent and covalent compounds.

SECTION – 1

1. 1. Fill in the blanks-
   1. Dalton said that ___________could not be divided.
   2. The outermost shell of an atom is known as _____________.
   3. The ____________of an atom is very hard and dense.
   4. Neutrons are ____________ particles having mass equal to that of protons.
2. Name the following-
   1. Protons and neutrons present in the nucleus.
   2. Arrangement of electrons in the shells of an atom.
   3. The binding force between atoms in a molecule of a compound.
   4. The number of protons present in the nucleus of an atom.
   5. The smallest unit of an element which takes part in a chemical reaction.
   6. The sum of the number of protons and neutrons of an atom.

SECTION -2

1. State the mass number , atomic number , the number of neutrons and the electronic configuration of the following atoms :
   
2. Differentiate between :
   1. Dalton’s atomic theory and the modern atomic theory.
   2. Stable and unstable electronic configuration
   3. Atom and molecule.
3. Explain the basic rules which governs the distribution of electrons in the various shells of the atom.
4. Define giving examples –
   1. Isotopes.
   2. Isobars.
5. Compare the charge and mass of the three subatomic particles.
6. What do you understand by relative atomic mass and molecular mass.
7. Explain how do atoms combine to form compounds.
8. What is electrovalency and covalency ?