a) elements always exist as separate atoms b) elements always exist as pairs of atoms called molecules c) elements and compounds can exist as molecules.
Regarding this, how many different atoms are there in a compound?
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Compounds are made from two or more atoms chemically joined together. For example, water is a compound of hydrogen and oxygen. Each water molecule contains two hydrogen atoms and one oxygen atom.
Also Know, can elements be separated? Elements are substances that cannot be separated into simpler substances. Salt is made up of the elements sodium and chloride. Water is made up of the elements hydrogen and oxygen. The smallest particles of matter are called atoms.
Beside above, can atoms exist independently?
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Atoms of most of the elements are chemically very reactive and do not exist in the free state or independently. Atoms usually exist in two ways: In the form of molecules, and. In the form of ions.
What is a mixture of elements?
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Elements, mixtures and compounds Elements are substances that are made from one type of atom. An element cannot be broken down into any other substance. A mixture is made by simply mixing together elements and compounds. No new chemical bonds are formed.