what is elements and compounds???
Answers
Answer:
Explanation:
consist of only one type of atom - which may, or may not join together to form molecules or large structures, therefore:
can exist as either atoms (e.g. argon) or molecules (e.g., nitrogen)
cannot be broken down into a simpler type of matter by either physical or chemical techniques - though some larger elements break-down spontaneously due to being radioactive.
Many elements are found in nature and so may be called 'naturally occurring elements'. Other elements have not been found in nature but can be produced in the laboratory. A few more elements are thought to exist but are very rare and even if produced would only exist for a very short time because they are radioactive and would quickly decompose into other elements whose atoms are smaller.
consist of atoms of two or more different elements bound together chemically,
can be broken down into a simpler type of matter (elements)
by chemical means; but not by physical means
always contains the same ratio of component atoms.
have properties different from their component elements (e.g. the compound water (H2O) is a liquid at room temperature and pressure and has different chemical properties from those of the two elements, hydrogen (H2) and oxygen (O2), from which it is formed).
A compound is a pure substance that consists of two or more elements chemically combined in a fixed proportion, that can be further subdivided into simpler substances by chemical (not physical) means only.
So, if a quantity of a material consists of atoms of two or more elements joined together, always in the same ratio, then the matter forming that material is a compound.
A molecule is the smallest part of a compound whose properties are those of the compound.
A compound can be represented by using a chemical formula.
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Atoms combine to form elements and when two or more elements are chemically joined they make compounds...
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