All compounds contain more than one element and more than one atom.
Compounds always contain more than one type of atom, by definition.
Correct. A compound has two or more types of elements.
a compound contaians 2 ot more atoms
This is a molecule.
Allotropes.
Every element has a specific amount of protons and neutrons in its nuclues. If an atom has more protons and neutrons than another element, it is heavier.
There is no such thing as an atom made of atoms. A molecule made of atoms of different types is a molecular compound.
Some types of matter contain one or more metals either in elemental form or as ions but not all.
Well a molecule has different substances in it. For instance H2O, or water, is composed of two hydrogen atoms and one oxygen atom. As you may observe, an atom is only one specific substance or element. So a molecule is made up of multiple atoms, and an atom is not.
isotopes
Any compound, whether molecular or ionic, will contain two or more types of atom.
No, a single atom would have to belong to a particular element. A compound must contain two or more different types of atom that are chemically bonded (either covalently or ionically) together.
Every element has a specific amount of protons and neutrons in its nuclues. If an atom has more protons and neutrons than another element, it is heavier.
No. Chemical compounds contain two or more different elements. H2O is a compound that does not contain a metal.There are many other examples, all the organic compounds for instance.
atom.
There is no such thing as an atom made of atoms. A molecule made of atoms of different types is a molecular compound.
Some types of matter contain one or more metals either in elemental form or as ions but not all.
No. (and there is no such thing as "the standard atom"). All isotopes of a given element contain the same number of protons.
A mixture contain two or more types of molecules.
It is true. A compound contains two or more different type of atoms.
False. The center of an atom is called the atom's nucleus. This nucleus may, or may not, contain one or more neutrons.
Elements contain only one type of atom (atoms with the same number of protons). Compounds contain more than one element, and thus contain atoms with different numbers of protons. Compounds can be converted into elements, but elements are not reducible to anything simpler (besides subatomic particles).