5. Spoilage of food in summer is a ______
change.
6. When vinegar and baking soda are mixed together bubbles are formed due to evolution
of ________.
7. ___________
is always involved in a change.
8. Earthquake is an example of_________
change.
9. Those changes which are desired to occur are known as ________ changes.
10. The occurrence of day and nights is a _______
change.
11. Dissolving sugar in water is ______ change.
12. Change of season can be classified as _______
change.
13. Volcanic eruption is a _______
change.
Answers
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5.chemical change
6.chemical change
8.physical change
9. desired changes
10.periodic change
11.physical change
12 physical change
13.chemical change
7. energy ( I am not sure for this one)
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