The Physical and the Chemical changes of the matter
You know that the changes that may occur to the matter are the physical changes and the chemical changes .
|The difference between the chemical changes and the physical changes .|
The physical change
You should know that the physical change is a change in the shape of the matter without any change in its structure ( properties ) .
Examples of the physical changes
|The physical changes in the matter .|
When you grind the chalk or the sugar into the powder .
The change of the water ( The matter ) from one state to another ( ice cycle ).
|The ice cycle is a physical change .|
When any solid matter melts as the wax , the chocolate and the ice .
When you dissolve the table salt or the sugar in the water .
When you cut the paper into the small pieces and when you make the paper recycling .
The malleability , the ductility and the bending of the elements .
The chemical change
|The chemical changes in the matter .|
You should know that the chemical change is a change in the structure of the substance producing a new substance or new substances with the different properties .
Examples of the chemical change
When you burn any matter as ( the wood , the sugar , the paper or a candle ) .
when the iron rust , the shape and the structure of the cleaning iron change as it is exposed to the wet air .
When you add sodium bicarbonate to vinegar .
When you add the yeast to the pastry ( doughs ) .
In the production of the yoghurt from milk .
In the fermentation of the fruits or the sugar .
In the digestion of the food .
|Examples of the chemical changes and the physical changes .|
You should notice that the melting of a candle is a physical change , while the burning of a candle is a chemical change .
You should know that the freezing of any liquid matter as water is a physical change .
You should know that the evaporation of the water to form the water vapour and the condensation of the water vapour into the water drops are physical changes .
You should know that the boiling of water and the melting of any solid matter are physical changes .
|The chemical changes and the physical changes of the matter .|