Can someone help me fill In the 2 blanks pls (8th grade science)

What is the name for a substance formed in a chemical reaction

What causes temperature extremes in the desert

2. cheryl hears a new song on the radio every day during the week on her commute to work. surprisingly, when the song comes on at a party on saturday night, she knows most of the words without trying. describe the three ways that we use cognition to learn without reinforcement. which type of cognitive learning without reinforcement best explains how cheryl knew the song lyrics? explain your answer.