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he following en of the four cally betero- sically bet- hrases for substances A through d. A compound J elements. 4.39 Based o
4.40 Based on the information given in the following equa- tions, classify each of the pure substances A through Gas elements

I'm so confused about thise questions. i truly didnt understand it
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Answer #1

An element contains only one type of atoms. It is made up of only one type of substance which is non-decomposable

A compound is a combination of two or more elements and can be decomposed into its constituent elements.

4.39) a) A + B ----> C

The combination of two substances gives C. These two can be elements or compounds but C is a compound

A- no classification

B - no classification

C - compound

b) D ---> E + F + G

Only a compound is decomposable. Here D is a compound. But it can decompose into either elements or compounds.

D - compound

E - no classification

F - no classification

G - no classification

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