Which of the following statements is true for gas particles? a. they move freely and combine with each other. b. they don’t move at all. c. they move slowly and in a structured pattern. d. they are constantly in motion and changing position.

Examine the false statement. compounds are the smallest unit of an element that occur most commonly in nature. select the rewording of the statement that is true. a: atoms are the smallest unit of an element that commonly occur in nature. b: molecules are the smallest unit of an element or compound that commonly occur in nature. c: molecules are the smallest unit of a compound that occur on the periodic table. d: compounds are the smallest unit of an element that occur on the periodic table