Question 20

three examples of physical change are

a)boiling of water, bursting of a balloon, and crumpling a piece of paper

b)burning of gasoline, rotting of an egg, and exploding fireworks

c)freezing of water, evaporation of gasoline, and rusting a nail

d)sawing of wood, crushing a can, and toasting a marshmallow

Three examples of change in physical structures are A) bursting of a balloon, boiling of water, and crumpling a piece of paper.

Physical changes will be changes influencing the type of a compound substance, however not its synthetic arrangement. Physical changes are utilized to isolate blends into their segment mixes, yet cannot as a rule be utilized to separate mixes into concoction components or less complex mixes.  

Physical changes happen when items or substances experience a change that doesn't change their synthetic synthesis.

As the following activities satisfy the aforesaid criteria they are called physical changes:

examples of nucleic acids are deoxyribonucleic acid (dna) and ribonucleic acid (rna).

answer; hydrologic cycle;