QUESTION:
1.Which substance is a compound? Why?
2. Which substance is an element? Why?
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QUESTION:
1.Which substance is a compound? Why?
2. Which substance is an element? Why?
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Answer:
Explanation:
A compound is a unique substance that consists of two or more elements combined in fixed proportions. This means that the composition of a compound is always the same. The smallest particle of most compounds in living things is called a molecule. Consider water as an example.
Any substance that contains only one kind of an atom is known as an element. Because atoms cannot be created or destroyed in a chemical reaction, elements such as phosphorus (P4) or sulfur (S8) cannot be broken down into simpler substances by these reactions.