# data[].attributes.headline
Big Idea:Atoms combine by forming ionic, covalent, and metallic bonds

# data[].attributes.subject
Big Idea:Atoms combine by forming ionic, covalent, and metallic bonds

# data[].attributes.attachment_link.title
Ionic, covalent, and metallic bonds | Chemical bonds | Chemistry | Khan Academy

# data[].attributes.headline
Big Idea: Electrons and Chemical Bonding

# data[].attributes.subject
Big Idea: Electrons and Chemical Bonding

# data[].attributes.attachment_link.title
Valence electrons and bonding | Periodic table | Chemistry | Khan Academy

# data[].attributes.body
A covalent bond, also called a molecular bond, is a chemical bond that involves the sharing of electron pairs between atoms. These electron pairs are known as shared pairs or bonding pairs, and the stable balance of attractive and repulsive forces between atoms, when they share electrons, is known as covalent bonding.

# data[].attributes.body
Metallic bond. Metallic bonding is the electrostatic attraction between the positively charged atomic nuclei of metal atoms and the delocalised electrons in the metal. Figure 1: Positive atomic nuclei (+) surrounded by delocalised electrons (•)

# data[].attributes.body
a thing used to tie something or to fasten things together.

# data[].attributes.body
In chemistry, a valence electron is an electron that is associated with an atom, and that can participate in the formation of a chemical bond; in a single covalent bond, both atoms in the bond contribute one valence electron in order to form a shared pair.

# data[].attributes.body
an electrically charged atom or group of atoms formed by the loss or gain of one or more electrons, as a cation (positive ion) which is created by electron loss and is attracted to the cathode in electrolysis, or as an anion (negative ion) which is created by an electron gain and is attracted to the anode.

# data[].attributes.body
A crystal is a solid material that contains atoms or groups of atoms arranged in a highly ordered structure. This structural arrangement is three-dimensional. A crystal lattice describes the arrangement of these atoms in a crystal and characterized as having transnational symmetry.

# data[].attributes.body
A chemical bond is a lasting attraction between atoms that enables the formation of chemical compounds. The bond may result from the electrostatic force of attraction between atoms with opposite charges, or through the sharing of electrons as in the covalent bonds

# data[].attributes.body
a group of atoms bonded together, representing the smallest fundamental unit of a chemical compound that can take part in a chemical reaction

# data[].attributes.body
A chemical bond formed between two ions with opposite charges. Ionic bonds form when one atom gives up one or more electrons to another atom. These bonds can form between a pair of atoms or between molecules and are the type of bond found in salts.