Flashcards in Giant covalent substances Deck (17)
Molecules comprising carbon atoms joined together to form spherical or nearly spherical hollow structures.
Property of matter that causes a force when near another charge. Charge comes in two forms, positive and negative. For example, a negative charge causes a repulsive force on a neighbouring negative charge.
Giant regular arrangement of atoms, with a repeating pattern, held together by covalent bonds.
Electrons that are not associated with a particular atom, eg in a metal, outer electrons can be free to move through the solid.
A form (allotrope) of pure carbon in which all the atoms are bonded to four others in a giant tetrahedral network structure which is very strong. Diamond is a the hardest known natural substance, has a very high melting point and does not conduct electricity.
A conductor used to establish electrical contact with a circuit. The electrode attached to the negative terminal of a battery is called a negative electrode, or cathode. The electrode attached to the positive terminal of a battery is the positive electrode, or anode.
Molecules of carbon with hollow shapes. Their structures are based on hexagonal rings of carbon atoms.
A form of carbon consisting of a single layer of carbon atoms joined together in hexagonal rings.
A form of pure carbon in which all the atoms are bonded to three others in giant sheets which can slide over each other.
Weak attractive forces between molecules. When a simple molecular substance melts or boils, it is the intermolecular forces that are broken (not the covalent bonds in each molecule).
A regular grid-like arrangement of atoms in a material.
A lubricant is anything which reduces the friction between two surfaces.
Refers to a substance made up of molecules, so it contains small groups of atoms, of a set size, held together by covalent bonds.
Long cylindrical molecules made from carbon atoms joined together by covalent bonds.
A large molecule formed from many identical smaller molecules known as monomers.
The tension a material can withstand without breaking.