Question

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 is the treatment in this experiment?

A.Salt
B.Water
C.Freezer
D.Ice tray

Answer 1

The salt

Answer 2

Because both have water both are going into the freezer both are in ice trays the only difference is the salt

Answer 3

Ok thanks

Answer 4

correct