Justin is making a snack. He toasts a piece of bread and spreads peanut butter and jelly on it. Then he cuts an apple into several slices and adds these to his plate. Next, Justin mixes a scoop of lemonade powder into a glass of water, mixes it, and adds ice. How many chemical changes occurred in this scenario? one two three four

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15-06-2017
Biology

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Justin is making a snack. He toasts a piece of bread and spreads peanut butter and jelly on it. Then he cuts an apple into several slices and adds these to his plate. Next, Justin mixes a scoop of lemonade powder into a glass of water, mixes it, and adds ice. How many chemical changes occurred in this scenario? one two three four

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slui9153 slui9153 · Answer 1 · 2017-06-15T14:47:39+02:00

slui9153 slui9153

15-06-2017

One chemical change- It was when he toasted the bread. The heat changed the bread so that it has the crust on the outside.

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pstnonsonjoku pstnonsonjoku · Answer 2 · 2021-09-21T20:35:11+02:00

Only one chemical change occurred when Justin was making the snack and that is when he toasted the bread.

A chemical change is said to have occurred when there is a change in the composition of a substance. This change occurs at the molecular level. Atoms of the substance are rearranged to form new substances. This rearrangement of atoms causes a new substance to be formed

An evidence that the toasting of bread is a chemical change is the change in the color of the bread after toasting.

The other processes are just examples of physical change because they do not change the composition of the substance.

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