The smallest particles of elements that enter into chemical reactions are known as atoms.
yes
All chemical elements have an atom as their smallest unit. Atoms are composed of varying amounts of electrons and protons. All elements except Hydrogen also have neutrons. Note that there is a difference between your phrase "all chemical substances" and my use of the term "all chemical elements"..... an element is made of atoms - a chemical "substance" may be made of molecules - groupings of different elements bonded in differing amounts - and it may be theoretically possible for us to break down every molecule into its constituent atoms, I'm not sure that it is always physically possible.
No. This is a definition of an atom. Electrons are only part of atoms.
Hydrogen has the smallest mass of all the elements. It's just a proton and an electron. [:
An atom. Anything smaller is an atomic particle from which all elements are made.An atom is the smallest particle of an element that has properties of that element.An atom is the smallest unit of an element that retains the properties of that element.
atom - smallest piece of an element that keeps its chemical properties; compound - substance that can be broken into elements by chemical reactions
yes
A molecule is a group of atoms bonded together, representing the smallest fundamental unit of a chemical compound that can participate in a chemical reaction. It can be a combination of the same or different elements.
An atom.
All chemical elements have an atom as their smallest unit. Atoms are composed of varying amounts of electrons and protons. All elements except Hydrogen also have neutrons. Note that there is a difference between your phrase "all chemical substances" and my use of the term "all chemical elements"..... an element is made of atoms - a chemical "substance" may be made of molecules - groupings of different elements bonded in differing amounts - and it may be theoretically possible for us to break down every molecule into its constituent atoms, I'm not sure that it is always physically possible.
No they do not. They are smallest particles of elements.
Elements are the simplest type of chemical. An element is composed of atoms. Atoms in turn are composed of subatomic particles. However, all substances are composed of atoms, and there are no substances composed only of subatomic particles - at least, not on Earth. It is believed that there exist neutron stars composed only of neutrons. In that situation, you could say that the neutron is the smallest type of substance.
elements..because.....two elements form a compound
No. This is a definition of an atom. Electrons are only part of atoms.
Hydrogen has the smallest mass of all the elements. It's just a proton and an electron. [:
Atoms are the smallest unit of an element because they are composed of protons, neutrons, and electrons, which are fundamental particles that cannot be divided further without losing the chemical properties of the element. Atoms are also the smallest unit of matter because they are the building blocks of all chemical elements and cannot be broken down into smaller units without changing the identity of the substance.
An atom. Anything smaller is an atomic particle from which all elements are made.An atom is the smallest particle of an element that has properties of that element.An atom is the smallest unit of an element that retains the properties of that element.