Chemical Bonds

A change that alters the form or appearance of a substance without changing it into a different substance.

• physical property

• physical change

• chemical change

• chemical property

A change in matter that produces one or more new substances.

• physical property

• physical change

• chemical property

• chemical change

Tags

NGSS.MS-PS1-2

Substances that undergo chemical changes.

• product

• ion

• bond

• reactant

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

A substance formed as a result of a chemical reaction.

• product

• reactant

• ion

• bond

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

A chemical reaction that releases energy, usually in the form of heat

• reaction

• exothermic reaction

• endothermic reaction

• reactant

Tags

NGSS.MS-PS3-3

NGSS.MS-PS3-5

A reaction that absorbs energy

• endothermic reaction

• reaction

• reactant

• exothermic reaction

Tags

NGSS.MS-PS1-4

An atom or group of atoms that has become electrically charged.

• neutron

• ion

• proton

• electron

Tags

NGSS.MS-PS2-3

Two atoms share one or more electrons in order to both form a stable octet (8 on the shell).

• hydrogen bond

• ionic bond

• metallic bond

• covalent bond

The valence electrons in metals are not tightly bound in the nucleus and each atom in a metal contributes all the electrons in its valence shell to all other atoms in the structure.

• hydrogen bond

• ionic bond

• covalent bond

• metallic bond

The attraction between ions with opposite charges (metal to nonmetal)

• ionic bond

• hydrogen bond

• covalent bond

• metallic bond