Question

the passage below describes an experiment. after a severe winter storm, nicks driveway was covered with ice. he read that salt makes ice melt at a lower temperature. before covering his entire driveway with salt, he wanted to know if adding salt could actually help melt ice in the freezing outdoor temperatures. nick weighed twenty ice cubes. he sprinkled salt on half of the ice cubes and left the other half unsalted. he placed all the ice cubes outside. one hour later, nick quickly dried each ice cube and reweighed it to see how much it had melted. complete the sentence. in this experiment, the salted ice cubes were part of _. a control group an experimental group

Explanation:

In an experiment, the experimental group is the one that receives the treatment being tested. Here, the treatment is adding salt to ice - cubes. So the salted ice - cubes are part of the group that has the variable (salt) manipulated.

Answer:

an experimental group