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2 years ago

13

Some students observe four different lab investigations. The students record their observations in a table.

2 answers:

Sati [7]2 years ago

3 0

Answer:

Number 4 is an example of a chemical reaction

Explanation:

heThe chalk is reacting with the vingear which is creating a new substance. The new substance is the gas that the reaction gives off.

ollegr [7]2 years ago

3 0

I think the number 4 is the right answer

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