Question

2. A scientist mixed two samples together: a colorless liquid that melts at 12°C and a yellow solid that melts at 390°C. She analyzed the results and found two ending substances. One of the ending substances was a gray solid. This ending substance is made up of the repeating group of atoms shown above. Which of the diagrams to the left shows the repeating groups of atoms that make up the samples the scientist mixed together?

Answer 1

Since a chemical reaction is said to have occured when two or more substances are chemically combined together,  the starting materials must be sample 1 and 2 as shown in optionB.

What is a chemical reaction?

A chemical reaction is said to have occured when two or more substances are chemically combined together. We must note that a chemical reaction produces new species that contain atoms that were present in the reactants.

Having said this much, considering the image of the product shown, the starting materials must be sample 1 and 2 as shown in optionB.

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