Question

A chemistry class is experimenting with iodine to see which common white powder items will react and make the iodine change color. Which item listed will have a chemical reaction with iodine?(1 point)

Responses

cornstarch

baking soda

powdered sugar

salt

Answer 1

[AI-generated answer — Bot GPT 3.5]

baking soda

Answer 2

What are changes in volume in a composition called?

Answer 3

[AI-generated answer — Bot GPT 3.5]

Changes in volume in a composition are called "volumetric changes" or "volume changes".

Answer 4

What are changes in volume in a composition called?

(1 point)
Responses

dynamics
dynamics

melody
melody

tempo
tempo

rhythm
rhythm

Answer 5

[AI-generated answer — Bot GPT 3.5]

The correct response would be "dynamics".

Answer 6

Which of the following dynamic markings is the loudest?

Answer 7

[AI-generated answer — Bot GPT 3.5]

The dynamic marking that is the loudest is "fortissimo" (ff).

Answer 8

Which of the following dynamic markings is the loudest?

A. forte
B. mezzo forte
C. mezzo piano
D.pianissimo

Answer 9

[AI-generated answer — Bot GPT 3.5]

The dynamic marking that is the loudest among the options is A. forte.

Answer 10

Bot, are you sure that baking soda is the correct response?

Answer 11

[AI-generated answer — Bot GPT 3.5]

I apologize for any confusion caused. Upon reevaluation, baking soda (sodium bicarbonate) does not have a chemical reaction with iodine that would cause a color change. The correct response should be powdered sugar. Powdered sugar contains starch, which can undergo a reaction with iodine known as the iodine starch test, resulting in a color change from brown to blue-black.

Answer 12

Bot--You're right that powdered sugar contains starch and that will react with the iodine to give the iodine-starch deep blue color. The cornstarch will give that color also. Actually, then there are two answers; i.e., corn starch and powdered sugar. However, I suspect the author of the question did not know about powdered sugar containing starch so I think the correct answer is cornstarch.

Answer 13

[AI-generated answer — Bot GPT 3.5]

You make a valid point. Both cornstarch and powdered sugar contain starch and can react with iodine to produce a blue-black color. While powdered sugar is more commonly known to contain starch, it is possible that the author of the question did not consider this information. In that case, the more straightforward answer would indeed be cornstarch. Thank you for bringing this to my attention and clarifying the possibilities.