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GCSE Chemistry Question Analysis - Chemistry - Short Questions

GCSE Chemistry Question Analysis

· gcse chemistry,magnetism,density

GCSE Chemistry Question Analysis Topic: Chemistry - Short Questions

Exam Questions:

1) Based on molecular forces, what type of polymer is neoprene?

2) (i) Write the type of magnetism observed when the magnetic moment are aligned in parallel and anti-parallel directions in unequal numbers?
(ii) Which stoichiometric defect decreases the density of the crystal?

Answers:

For GCSE Chemistry, you should know:

1) Neoprene is an elastomer because of molecular forces. The polymer shows elasticity.

It is used to make rubber bands because it is soft and elastic.

2) (i) Ferrimagnetism: When the magnetic moments of the substance's domains are aligned in unequal numbers in parallel and anti-parallel directions, the phenomenon of ferrimagnetism is the result.
(ii) Vacancy defects: A vacancy defect occcurs when certain lattice sites are left empty during crystal formation. An atom is absent from its normal atomic site in vacancy defects. The density of a substance falls when an atom is missing, or when there are vacancy defects.

Work hard for your GCSE Chemistry examination!

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