A bond formed when atoms share one or more pairs of electrons.
What is a covalent bond?
100
A bond formed by the attraction between positively charged metal ions and the electrons arounds them.
What is a metallic bond?
100
The class of element that forms covalent bonds.
What is a nonmetal?
200
The force of attraction that holds the atoms together.
What is a chemical bond?
200
A charged particle that form when atoms gain or lose electrons.
What is an ion?
200
A group of atoms that are held together by chemcal forces. Also the smallest unit of matter that can exist by itself and retain all of a sustance's chemical properties.
What is a molecule?
200
The properties metallic bonding gives to metals include _________ _________, _________, and _________.
What is electrical conductivity, malleability, and ductility?
200
Substances which tend to have low melting points, boiling points, and are brittle when solid have ____ _______.
What are covalent bonds?
300
An electron found in the outermost shell of an atom.
What is a valence electron?
300
Atoms pull electrons away from other atoms.
How do ionic bonds form?
300
A model that shows only the valence electrons in an atom.
What is an electron-dot diagram?
300
Metal ions that lose electrons.
What is positively charged metal ions?
300
Compounds are brittle and highly soluble, with high melting and boiling points.
What are the properties of ionic compounds?
400
The number of valence electrons in the outermost energy level.
What determines if an atom will form bonds?
400
The regular pattern in which a crystal is arranged.
What is a crystal lattice?
400
Molecules made up of two atoms.
What are diatomic molecules?
400
Objects that can be bent without being broken.
What are metal objects?
400
Two or more atoms joined in a definite ratio.
What is a molecule?
500
Elements with 4 valence electrons.
What is the Carbon Group? (also accepts Group 14)
500
The resulting compound has different properties.
What occurs when a metal and nonmetal combine by ionic bonding?
500
Elements found in nature as diatomic molecules.
What are diatomic elements?
500
Electrical conductivity, ductility, and malleability.