Which of the following is a correct example of physical change? burning a piece of wood oxidation of an object's surface slicing through a block of sodium changing the chemical identity of matter

The correct answer is C. Slicing through a block of sodium

Explanation:

Physical changes imply a change in density, state, shape, volume, etc. of a substance, but not changes in the chemical properties or chemical composition of it. Due to this, physical changes include processes such as boiling a substance, cutting it or freezing it as these processes only affect physical properties. On the opposite, processes such as oxidation or combustion that affect the composition of a substance lead to chemical changes.

According to this, the one that is an example of physical change is "Slicing through a block of sodium" because this process involves only a change in the volume or shape of the substance that is the block of sodium which means it changes physically but its identity and chemical properties remain intact.

zfoods? ok, pressure is used to keep the heat inside and to keep the food perfect.

samuel de champlain. in 1608, king henry iv sponsored pierre dugua, sieur de mons and samuel de champlain as founders of the city of quebec with 28 men. this was the second permanent french settlement in the colony of canada.