Page 1 - Home Assignment

INTERNATIONAL SCHOOL
Class - VI
Subject - Chemistry
Topic – Changes Around Us
Sub-Topic – Concept Mapping

Home Assignment

Concept - What is Change, Types of Changes

Q1. Define the term ‘Change’. 1
Q2 State two examples each of fast and slow change. 1
Q3 State two examples each of periodic and non-periodic change. 1
Q4 State two examples each of desirable and undesirable change. 1
Q5 State two examples each of natural and man-made change. 1

Concept – Reversible and Irreversible Changes

Q1. Differentiate between Reversible and irreversible change. 1
Q2 Temporary changes can be reversed. Justify the statement with the help 1
of an example.
Q3 Define Vapourisation and Condensation. 1
Q4 Pick the odd one out: 1
Burning of paper, Germination seeds, Growing of Plants, Melting of
Chocolate
Q5 Are all irreversible changes undesirable? Explain with example. 1

Concept – Physical and Chemical Change,

Characteristics of Physical and Chemical Change

Q1. How can you tell if there has been a chemical change? 1
Q2 You cut a sheet of paper so that it makes many long strips of paper. Do 1
you have more paper after cutting the actual paper? What type of change
is it?
Q3 Is burning a physical or chemical change? Why? 1
Q4 A burning candle shows both physical and chemical changes. Explain? 1

Q5 State two characteristics of chemical change. 1

Concept – Common causes of Physical and Chemical Changes

Q1. What do you mean by a chemical reaction? 1
Q2 Throw some light on the terms, ‘Reactants’ and ‘Products’, with the help 1

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