explain the term chemical changes with the help of examples
Answers
Answer:
Chemical changes occur when a substance combines with another to form a new substance, called chemical synthesis or, alternatively, chemical decomposition into two or more different substances. These processes are called chemical reactions and, in general, are not reversible except by further chemical reactions. Some reactions produce heat and are called exothermic reactions and others may require heat to enable the reaction to occur, which are called endothermic reactions. Understanding chemical changes is a major part of the science of chemistry
Examples:
Rusting of iron in presence of moisture and oxygen.
Burning of wood.
Milk becoming curd.
Formation of caramel from sugar by heating.
Baking of cookies and cakes.
Cooking any food.
Acid-base reaction.
Digestion of food.
Thank you : )
Answer:
a change in which chemical properties of a substance get changed and new substances is formed this is called chemical change
Explanation:
some examples of chemical changes are
rusting of iron because when iron get rusted we can't get iron again and new substance is formed that is rust chemical and physical properties are different from the iron
next example is of photosynthesis in photosynthesis carbon dioxide and water are used to prepare food and the food formed is simple glucose so we can't get back carbon dioxide and water and chemical properties are different from carbon dioxide and water of glucose
hope it help you