Page 1 - 3-H.A-Concept Map-Changes Around Us
P. 1

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            1
                         help 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.         1
                         Do 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          1
                         help of suitable examples.
                  Q3     State four common causes affecting the physical and chemical                 1
                         changes.



                                                                                                         1
   1   2