Physical Changes and Chemical Changes

Salt dissolves in water

• physical Change
• chemical change

hydrochloric acid reacts with magnesium to produce hydrogen gass

• physical change
• chemical change

a piece of copper is cut in half

• physical change
• chemical change

a sugar cube is ground up

• physical change
• chemical change

water is heated and changed to steam

• physical change
• chemical change

iron pipe rusts

• physical change
• chemical change

rubbing alcohol evaporates

• physical change
• chemical change

ice cube melts

• physical change
• chemical change

milk sours (goes bad)

• physical change
• chemical change

sodium and potassium react violently with water

• physical change
• chemical change