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Consists of two or more elements chemically bonded in a fixed ratio.
An impure substance that contains two or more substances that can be separated by physical means.
Elements contain only one type of atom, while compounds consist of multiple types.
Indicates the number of protons in an atom.
Electrons in the last occupied shell of an atom.
The group number equals the number of valence electrons for main groups.
Involves the transfer of electrons between metallic and non-metallic ions.
It loses valence electrons to form a positively charged cation.
A positively charged ion formed when an atom loses electrons.
Involves the sharing of electrons between atoms.
They are non-reactive due to having a full outer shell of electrons.
Indicates the number of occupied electron shells in an atom.
A negatively charged ion formed when an atom gains electrons.
Metals are typically found in groups 1 and 2, while non-metals are in other groups.
The total number of protons and neutrons in an atom.
Consists of two or more elements chemically bonded in a fixed ratio.
Contains two or more substances that can be separated by physical means.
An element contains only one type of atom, while a compound contains multiple types.
Indicates the number of protons in an atom.
Electrons in the last occupied shell of an atom.
They do not form compounds due to having a full outer shell of electrons.
The group number equals the number of valence electrons for main groups.
The attraction between oppositely charged ions formed by electron transfer.
Cations are positive ions formed by losing electrons; anions are negative ions formed by gaining electrons.
Attraction between shared electrons and protons in atomic nuclei.
Consists of two or more elements chemically bonded in a fixed ratio.
Contains two or more substances that can be separated by physical means.
An element contains only one type of atom, while a compound contains multiple types.
Indicates the number of protons in an atom.
Electrons in the last occupied shell of an atom.
The group number equals the number of valence electrons for main groups.
Involves the transfer of electrons between metallic and non-metallic ions.
It loses valence electrons to form a positive ion (cation).
A positively charged ion formed when an atom loses electrons.
Attraction between shared electrons and protons in atomic nuclei.
They are non-reactive due to having a full outer shell of electrons.
Indicates the number of occupied electron shells in an atom.
A negatively charged ion formed when an atom gains electrons.
Protons are positive, neutrons are neutral, and electrons are negative.
The total number of protons and neutrons in an atom.