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a
What is a compound?
A A compound is a pure substance formed by the breakdown of other compounds.
B A compound is a pure substance left behind by the breakdown of other
substances.
C A compound is the result of the splitting of the atoms of different substances.
D A compound is a pure substance composed of two or more elements,

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Answer:

D

Explanation:

A chemical compound is a chemical substance composed of many identical molecules composed of atoms from more than one element held together by chemical bonds. A molecule consisting of atoms of only one element is therefore not a compound.

A pure chemical compound is a chemical substance that is composed of a particular set of molecules or ions that are chemically bonded. Two or more elements combined into one substance through a chemical reaction, such as water, form a chemical compound.

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Answer:

D

Explanation:

One example of a compound is steel unlike a mixture (for example a salad) it looks uniform throughout. In the case of steel, it is often a compound of Iron (Fe), Carbon (C), and in some cases a few other types of metals.

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