a corn is a kind of object & popping popcorn requires adding heat to the corns & adding heat to an object sometimes causes chemical reactions -> cacti abrasion will effect physical breath to the halite popping popcorn will cause chemical reactions to the corns  popping popcorn will cause chemical reactions to the corns & physical reach effect different australia to relation -> popping popcorn will cause a different substance to form popping popcorn will cause a different substance to form  web loss will effect a different adaptation to relation & different substances have different chemical properties -> popping popcorn will cause a different substance with different chemical properties to form