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students mixed two liquids in a beaker and listed their observations

> Liquid 1 was colorless
> Liquid 2 was colorless
> The mixture of liquids 1 and 2 formed a colorless solution
> small, solid particles formed and fell to the bottom of the beaker

based on these observations, which statement contains the best evidence that a chemical reaction occurred?

A. There is a change in shape
B. there is a change in volume
C. the two liquid mix into a solution
D. the two liquids made a new substance

Sagot :

The two liquids made a new substance.

What is a physical and chemical change?

A chemical change results from a chemical reaction, while a physical change is when matter changes forms but not chemical identity.

A chemical change occurs when some substances are transformed into different substances, with different nature and properties. In this case when both liquids are mixed a solid is formed.  This is an example of a change of state of the liquids reactants to the solid product, which has properties and characteristics different from that of the initial liquids of the mixture which is called a chemical change.

Hence, option D is correct.

Learn more about physical and chemical change.

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