Sarah is testing how quickly saltwater freezes. she adds saltwater to one ice tray and plain water to another ice tray. she places each tray in the freezer and records the time when each one starts to freeze. what treament did she do? . a. salt. b. water. c. freezer. d. ice tray

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