Question

Students mixed 20 mL of white glue and 20 mL of water in a cup. They added three drops of food coloring to the mixture. Then, 15 mL of borax solution was stirred into the mixture. Once mixed, the students observed they could take the substance out of the cup and roll it around in their hands. They concluded that –

Answer 1

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Answer: a chemical reaction occurred because a new substance was formed with new properties!

Explanation: when u mix glue water and borax it forms into a new substance which is a chemical reaction

Answer 2

The students concluded after mixing the water and glue that;

A chemical change took place because a new substance was formed.

We are told that the students mixed 20 mL of white glue and 20 mL of water in a cup. These two reactants are different and we are told that 15 mL of borax solution was stirred into the mixture.

Now, the three reactants are different and they combined to form a substance that they could roll around their hands.

For them to be able to roll the product around their hands means that a new substance was formed.

In conclusion, we can say a chemical change took place as 3 different substances combined to form a new product which is not reversible like physical change.

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