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HEYA GUYSPLS HELP ME TO SOLVE THISQuestion-The following as a physical or chemical change, give suitable reasons for the same1Tearing a piece of paper into 100 pieces2 Burning a piece of paper3Hammering a nail into a piece of wood.4Letting the nail rust5Inflating a balloon6Cutting an apple in half7Iron and sulphur are heated and form a non-magnetic shiny grey substance8Dry Ice (solid carbon dioxide -CO2) is sublimed at room temperature9 Vinegar reacts when mixed with baking soda10Water boils at 100 degrees Celsius |
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Answer» Tearing of a paper is a PHYSICAL change because when the paper is torn only the appearance of the paper is CHANGED and no new SUBSTANCE is formed. Since this is a physical change this change can also be reversed. Burning of paper is a chemical change when paper is burnt the chemical composition of the paper is changed at the molecular level. Subsequently the paper is turned into ash this chemical change is am irreversible change. Hence compared burning of paper is a chemical change and tearing of paper is physical change. Combustion changes the chemical properties of the paper. A lot of what you have left over is carbon dioxide or water—two THINGS that are fairly unambiguously not paper. You can’t make any physical changes to get the paper back. Therefore, burning paper is a chemical change. 2 Answers for 5 points.................... |
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