Question

Which of the events involves a chemical reaction in Larissa’s process of making sautéed purple cabbage?

A) Larissa washes and cuts some purple cabbage into long thin strands.
B) Larissa watches as the cabbage sizzles, releases steam, and softens.
C) Larissa adds a squeeze of lemon juice to the cabbage, and it turns pink.
D) Larissa adds butter to a pan and allows it to melt and turn to liquid.
E) Larissa adds the cabbage to the butter with a sprinkle of salt and stirs it.
F) Larissa empties the cabbage into a bowl and puts it on the dinner table.

Answer 1

The addition of lemon juice to the purple cabbage, leading to a color change to pink, represents a chemical reaction due to the acidic environment affecting the pH-sensitive anthocyanins in the cabbage. Option C is correct.

Step-by-step explanation:

The event in Larissa's process of making sautéed purple cabbage that involves a chemical reaction is when Larissa adds a squeeze of lemon juice to the cabbage, and it turns pink.

This change in color is evidence of a chemical change because the acidic lemon juice affects the anthocyanins in the cabbage, which are indicators that change color based on the pH level of the environment. In this case, the cabbage turns pink because the environment has become more acidic due to the addition of lemon juice.

The event that involves a chemical reaction in Larissa’s process of making sautéed purple cabbage is option C) Larissa adds a squeeze of lemon juice to the cabbage, and it turns pink.

When Larissa adds lemon juice to the cabbage, the acid in the lemon juice reacts with the anthocyanin dye in the cabbage, causing a change in color from purple to pink. This change in color indicates a chemical reaction taking place.